You gotta at least get the best one, then the others of your choice.
I say best one because it has the most mods and customization(or personalization) It is the lightest with the highest capacity combination. It is built to last (N-dlc, cold hammer forged, Glock polymer 2 tech) as stronger or stronger than HK. Yes, it can handle 45super. It is utterly reliable. Concealable.
It can be put into the Recover Tactical 20/21 brace, if you're into that either for fun or for some advantage like letting your 10 year old use it and having good control even with the most powerful ammo. I believe there's another brace that can take it but i forgot which.
The only down side is that there is no optic mount option except to get the slide milled or use the Dove Mounting Solution. Not a big deal for me since I prefer irons on a carry gun and I have an optic on my 20/21 brace.
You can however have extra slides that are milled while keeping the original untouched. You can use G30, G36, G29, as well as another G30S slide. (36 and 30S are almost identical except that the 30S metallurgy is built to a much higher standard, and almost 1oz heavier)
Just from the factory, though, if you never shot one, it is on a whole nother level. The slide action is fast, faster than a 30, almost like a 9mm. Light for caliber ammo turn it into a very fast and low recoiling shooter.
I suggest it because its very different from a typical 45acp and most people dont know. They think its like a 30, but no. If you dont like recoil, this gun is not for you. It definitely has more recoil than a 21 or 30. I dont mind the recoil since I learned to control it, not mitigate it. I get alot of muzzle rise but returns on target faster than most can keep the muzzle on target. 2 different methods. Most people never get good with their guns though, so maybe it does not matter to you.