I just purchased a G23 last month (3rd Gen, OD), my first Glock and first pistol. I'm loving it! If I can find a range that has them, I would like to to shoot a G21, G30, G36, G19, and G26.
For Concealed Carry, I haven't decided if I'm going with a 9mm or a .45 ACP yet, but I'm heavily leaning towards the .45. Which means I'll probably get a G36 for my next Glock and primary carry, as long as I like how it shoots.