I own a 43, a 48, and a 19, and I've carried all three. With the belt and IWB setups I use, the "comfort" difference between the 3 is marginal. I basically sent my 48 off to a friend of mine that lives in another state so he could borrow it. (via a transfer, obviously) Decent gun? yes. But still nothing like a 19. and still not miles better than my G43. Which is fine for what it is- but honestly if I can get away with it I'd still rather carry the G19 or even my G26. Both of which I shoot better than any of the minis.
Also BTW that shield arms thing basically doesn't count. It's vaporware. And you have to use a different catch in the gun so you don't f*** the gun up with the
magazines. Likely a great product but worthless in the real world, if the majority of people can't access it. It's like me telling someone to go out and buy an RTX3080 GPU to upgrade the
graphics in their computer. Oh wait, but only scalpers have the cards and they're like 2 grand? yeah that's useful. I digress.
I never really fixate on that, but let's say I couldn't use my current setup, the only thing that would change would be the mags. I'd still rather have a G19 with 10 in it , and a 10 spare, than a
mini. a mini with 10 in it is still not equivalent to a larger, more normal gun with the same. "extra capacity" to me is just frosting, not an absolute requirement.
These days the only use I even have for a mini or other compromise gun is because of either clothing limitations or similar. The 43 comes out when I have to carry a gun while wearing a marginal belt or a set of pants I didnt upsize, etc.