I do not own one, but have handled several.

They are very flat for easy carry, especially now that they are using a thinner slide lock lever. The trigger pull is a lot like the Glock, but without the stupid trigger safety thingy.
The PM series are to small for my hand, so I prefer the compacts so I can use all my fingersto hang on to it.
I think I would prefer the K series that has the steel frame for recoil absorption. Anytime you get a 9mm, 40, or 45GAP down that small it's going to be snappy.