As far as recoil goes, I've noticed a good bit of difference in recoil that I've felt while shooting my CCF G22 vs my G22. I have my CCF set up with the 1911 grip. I too was worried about the lack of flex in the stainless frame but I enjoy shooting 40sw out of my CCF much more than my Glock frame. I believe it feels more like a 9mm with the stainless frame. I'm curious how the aluminum frame might work.