Hello, Andyman85, WELCOME to the Forum, and congratulations on your growing family of Glocks!
Personally, I have and love the G26 and G30, perfect size (once you put the grip extensions on) for easy concealment, plus you could use G17 mags in the '26 or G21 mags in the '30, a task made especially easier with slip-on extensions like the X-Grip.
Again, WELCOME!
*Moved to Introductions*