Newer serial # Gen4 Glock 19 or G17.  While manageable the Glock 23 is one of least pleasurable Glocks to shoot.
Sig P320
Walther PPQ
S&W M&P45
HK VP9 would work well, but is not be on my personal list. 

Love my g21. Reliable accurate bigger bullet.

Love my g21. Reliable accurate bigger bullet.

Love my 30, but IIRC, the OP said something about small hands.  The 21 is a handful, even for a larger guy like me.

Not insurmountable, but comfort while getting used to a pistol does matter.

Since you can afford the scar 17 just make us all sick and order a salient arms glock or m&p. lol. Omahaoutdoors takes orders

Since you can afford the scar 17 just make us all sick and order a salient arms glock or m&p. lol. Omahaoutdoors takes orders

Lol I'm still getting it bad from my wife over buying the scar 17 and am in no way wanting to invoke further ire from her haha, I wish I could though!!

Lol I'm still getting it bad from my wife over buying the scar 17 and am in no way wanting to invoke further ire from her haha, I wish I could though!!

I have brand new and very close to new SAI M&P's on island for sale if interested
Remember, it's easier to ask for forgiveness than permission.

All handguns should be 9mm and all 9mm should be glocks.

All handguns should be 9mm and all 9mm should be glocks.

All handguns should be Glocks, and all Glocks should be 9mm.     

my handgun calibers start with a "4" and/or end with a magnum.   

I'd stick with the SCAR if the sole purpose is home defense as rifles are far more effective than a handgun.  You can access them quickly through one of these vaults or similar vaults http://www.amazon.com/exec/obidos/ASIN/B0075JO1AO/?tag=2ahawaii-20

You can access it just as quick as a pistol, unless you want to carry the pistol on you at home.It does take more practice than a pistol in close quarters, but it's accuracy, stopping power, and just scary factor for the intruders more than make up for it.

All handguns should be Glocks, and all Glocks should be 9mm.     

Lol I knew it was something like that. Close enough!

A shotgun doesnt interest you for home defense? UTS-15 or KSG are compact and high capacity. At close range bird shot can make first size holes. Or you can even get mini shot shells and carry 24 rds lol.

A shotgun doesnt interest you for home defense? UTS-15 or KSG are compact and high capacity. At close range bird shot can make first size holes. Or you can even get mini shot shells and carry 24 rds lol.

A shotgun Is an excellent home defense firearm for sure, but I'm really not all that sure if it fits what I'd like. For me a hd shotgun would have to be semi auto, but I plan on loading several different types of ammo in a mag (or tube for shotgun) and from I've heard semi auto shotguns don't do well cycling different types of ammo one after another. I'd stack my mags with a variety of hollow points and fmj's, just to be able to respond against enemies behind cover, or thick clothing,or be able to punch through a wall if the intruder is hiding behind it. And I'm just not sure if a semi auto shotgun has that capability. And I'd wanna be able to absolutely trust my piece of gear I'm relying on to defend my house and family. With a pistol or rifle I have that confidence, but not with a semi auto shotgun. And pumps are ok, I just wanna be able to make an intruder piss himself with the sheer volume I'd be able to send down at him with a semi auto lol

I am really leaning towards the hk vp9. What are island prices for them? New, preferably. And I have my scar 17 in the mainland right now, so can I ship it to myself and take both it and the pistol I acquire to the hpd to register it? I know I need to take a handgun safety course, and then I take that to hpd and apply for a pistol permit then I pick the permit up then I pick the pistol up from the gunshop then I goddamn it it sounds like such a hassle!! And then after I get it from the gunshop I go register it? Then since I bought the scar and have it stored in the mainland registered to me I just take both my scar and pistol to get them registered? Gosh man I'm gonna have to take at least three days of leave to deal with this.

A shotgun Is an excellent home defense firearm for sure, but I'm really not all that sure if it fits what I'd like. For me a hd shotgun would have to be semi auto, but I plan on loading several different types of ammo in a mag (or tube for shotgun) and from I've heard semi auto shotguns don't do well cycling different types of ammo one after another. I'd stack my mags with a variety of hollow points and fmj's, just to be able to respond against enemies behind cover, or thick clothing,or be able to punch through a wall if the intruder is hiding behind it. And I'm just not sure if a semi auto shotgun has that capability. And I'd wanna be able to absolutely trust my piece of gear I'm relying on to defend my house and family. With a pistol or rifle I have that confidence, but not with a semi auto shotgun. And pumps are ok, I just wanna be able to make an intruder piss himself with the sheer volume I'd be able to send down at him with a semi auto lol

I might be pusing the subject but there are firearms that meet what you want it to do. SRM shotgun. Semi auto, has a tube magazine that you can fill each tube with different types of rounds, and you index it to which round you want to fire next. Can go from slugs, to buck, to bird to pdx1 with one push of the lever and rotate. We had couple of these at the shop i work at. Also would be able to get you a good price on a vp9 but youd have to come to maui to get it. Thats a problem. lol.

A shotgun Is an excellent home defense firearm for sure, but I'm really not all that sure if it fits what I'd like. For me a hd shotgun would have to be semi auto, but I plan on loading several different types of ammo in a mag (or tube for shotgun) and from I've heard semi auto shotguns don't do well cycling different types of ammo one after another....

None of us semi-auto guys had any trouble cycling slug, bird, and buckshot at the last HDF shotgun day.  In one drill I shot all three with no failures, so I'm not sure what the circumstances were for someone telling you semi-auto's don't like cycling different types of ammo.  What I think you may be getting confused with the semi-auto's ability to shoot less-lethal or other low-velocity ammo like the stuff Aguila makes.  Even with those, some of them may cycle a particular shotgun, but not others.

I know in an HD situation I'd trust my shotgun first. 

my handgun calibers start with a 4" and/or end with a magnum.   

Sorry, but your 4" (inch) and magnum just don't seem to go together............just saying 

You can ship the rifle to yourself, then register it at HPD...think the registration requirement was 3 or 5 days from arrival.  Not sure what's the best shipper, USPS/FedEx/UPS.

Hopefully only 2 days leave.

Buy the pistol, go apply for permit. Same day.

Pick up permit, pick up pistol, return to hpd and register. Pain the ass but all on the same day.

Register rifle either when applying for pistol permit or when registering pistol.

Ps. Isn't the scar 17 308 caliber ?  Unless you live on a farm or ranch, I don't know about the advice of using that for HD.

I am really leaning towards the hk vp9. What are island prices for them? New, preferably. And I have my scar 17 in the mainland right now, so can I ship it to myself and take both it and the pistol I acquire to the hpd to register it? I know I need to take a handgun safety course, and then I take that to hpd and apply for a pistol permit then I pick the permit up then I pick the pistol up from the gunshop then I goddamn it it sounds like such a hassle!! And then after I get it from the gunshop I go register it? Then since I bought the scar and have it stored in the mainland registered to me I just take both my scar and pistol to get them registered? Gosh man I'm gonna have to take at least three days of leave to deal with this.

Got my VP9 for $650 at OGC Tactical.  If you haven't taken the handgun safety course yet then you've got some time to go since the waiting time for the affidavit AFTER taking the class is between 2-7 weeks, depending on who you do the course with.  Also as you've mentioned the process after getting the affidavit is completely ridiculous, purchase the gun, apply for the permit, wait 2 weeks, pick up the permit, pick up the gun, register the gun.

The good news is that since it's going to take a while to get your affidavit you'll have plenty of opportunities to try different guns.  If you take LIFE's gun safety course the instructors bring an amazing assortment of guns and I can say with confidence that you'll likely be able to get trigger time on everything that's been mentioned in this thread.  There are also fun shoots that you can come to as long as you're an HRA member and as long as you bring your own ammo people will likely let you shoot their guns.