Welcome WaveTwister.

Here's my 2 cents.
For our main "meat and potatoes" all around household versions, I have a Gen 3 GL19, Rockette (my wife) a Gen 4 GL17.
The 19 is fine for me as I do carry (legally) upon occasion and it's a bit lighter than the 17.
The 17 offers Rockette a bit more to hang onto and more of a sight with it's slightly longer barrel.
We notice no difference in grip width between the two.
The main point is, no matter what side of the house either one of us is on, whatever we pick up operates EXACTLY the same.

I do keep a GL19 mag in my 19, but all other "loose mags" around the house are for a 17 WHICH FITS IN THE 19.
Again, whatever we pick up works.

Yes, we did change out both triggers to something lighter after less than a year, (Ghost 3.5#) and after 3 & 4 years, have just changed our sights to Trijicon.
Not necessary, but nice to have.

We also have TSG (Tacticle Solutions) .22 conversions for both.

These are made of steel so they are more like the real thing for paractice.
(Not knocking Advantage Arms, but AA's are made of Aluminum and we like to simulate as close as possible to the real handling of the firearm.
Saves LOTS of money building those muscle memories.
Here is a link to our experience with TSG (Tacticle Solutions) and these conversions.
https://2ahawaii.com/index.php?topic=11771.msg113771#msg113771 After 3 years, we have again had issues similar to those noted in the above link and informed TactiSol.
They sent me a mailing label and I just sent them off last week. I will update when they come back.
Before purchasing a hand gun, I recommend YOU ALL go to a couple of the FunShoots and try everybody's gun.
Most folks are more than willing to let you try.
Feel free to keep asking questions and be sure to hit the Fun shoots.
Nothing worse than buying a gun you don't like and selling it.

They kind lose money like a car once their off the lot and have a few miles on them.
