I really like the ergonomics and the way it feels in my hands. It is a well made , solid handgun.I have not had a chance to fire it yet but I have field stripped it, cleaned any excess oil and punched the bore.
Only two things I don't like and they are both very minor. One is the slide slide stop detent the other is having to disengage the lever in the magazine well to be able to remove the slide. I have seen Iraqveteran8888 on YouTube bypass the lever by dry firing it while removing the slide. Will have to try that.
One note though. To me field stripping and breaking down the Glock and removing all the parts is simplicity itself. The M&P seems a little more complicated but not undoable.