I really struggle with why the C series is so much cheaper!
I have a P40. I like it because it has the DLC coating and night sights. I would consider a PM40, but that would really be too small most of the time for me. I'm not big on 2 finger guns in real calibers other than J frames with boot grips.
Glad you like your Kahr. Kahr seems to own the small auto market for now, IMHO. Everything else is too tall or wide to be a small fast shooter.