You have to weight the "what ifs". What distance would you engage at where a micro vs full size or like would make a difference. If you go by FBI stats, there's the 7 yards thing. At that distance, the size doesn't matter much. But extend that out to 20 yards +, then rapid fire there would be a difference. But my RDS helps mitigate that since my VP9 has irons and my Shield plus (micro) has RDS.
At 15 yards, I'd say that I shoot both my VP9 and Shield Plus the same for rapid fire. Had I had a RDS on my VP9, then I might be able to shoot that faster due to the pick up being faster with a RDS for me.
The CCW test I took here, I scored 100% on both guns. Both were pretty much golf ball grouping until the 15yrd mark. Then it was grapefruit IIRC grouping. I think I posted the pick of the target in another thread. I can't remember where. So this is how I base my above, plus open shoots in the bays where you can rapid fire. Even though the CCW test has a max time, i finished well before it. So it's not like I slow fired. I would say I did at a pace that I know I can control. Years of open shoots taught me "know your limits".
So in the end, since I shoot both well, it's def easier to carry a smaller pistol. Comfort wise. I used to CCW my VP9 in Vegas all the time until I got my Shield since HI began issuing CCW's. Some people don't carry cause it's not comfortable, so if you're one of these types of people, then getting a smaller pistol is better than not carrying at all.
Mag size isn't too much of an issue since HI only allows 10rds. Many max out at 10 or you could buy an extension to get you to 10rds. I also posted about this when weighing my options in another CCW thread. Sorry, can't remember which one. I think the G43 has like a 6rd cap, which is too low for me. But the G43X holds 10rds.