Various gunstore types have told me it's their next purchase as well. Designed to be reliable, more comfortable and with a better natural point of aim than Glock, over 370 law enforcement agencies have switched to the M&P's.
The compact feels great, can be worn in a large pocket but better inside the waisteband. My 9mm has very little recoil, but I haven't tried the .40 .
I second any recommendation for S&W M&P. My M&P .45 is *amazing*.