Glock 22 is more comfortable in .40 than the 23. The 23 has too much blast and too little weight. Glock 17 is great as well since it is same as 22. I havent' fired the Glock 19 but I have 30 Luger on the glock 19 platform. I use Glock 22 mags with the X Grip pad in the G19/23 so I can use higher cap magazines... The Glock 19/23 feels great but I was not impressed with shooting. Too much blast for my wife, and I didn't like it, punishing on my hands. I believe the G19 (9mm) is much better on that platform. The 30 Luger is sweet to shoot so I imagine the 9mm is fine... I carry the 22 with a belt clip - Mexican Carry, very comfortable.