I have a K40, if I was able to get an MK I'd go 9. I'm not a 9 guy either. I would like to find an old MK one of these days. I borrow another fella's when I need to make a grip and seems I have it more than he does.

I'm surprised at the soft / easy shooting comments myself.

I had my K40 magnaported and it's still a fire breathing dragon. I'm good with 40's in full size guns but compacts not so much.
I'm not sure its so much recoil as just muzzle flip, requiring too long to get back on target for a second round.