I have both G22 and G17 4th gen. I've shot the Glock 17 more then the G22. I think they did a good job with the upgrades, The wish they hadn't changed the spring in the G17, I never thought the G17 had a recoil problem and now I have to buy different spare parts and time will only tell if the slide and spring hold up. I've noticed small dents on the end of the recoil spring. As far as the G22 the new recoil spring helps a little. For many friends that are lefties and small hands they will really like the new Glocks.