I carry a G23 everyday. It's, hands down, the most functional pistol I've ever owned.
Decent sight radius, without having to move up to the full sized 22, very concealable with the right IWB holster and nothing more than a T-shirt, and 13 +1 rounds of .40S&W pack a hell of a punch.
I won't say which you should own. Get whatever suites YOU best. For me, it's the 23.