Daaamn... this thread inspired me yesterday... spent 2 hrs at the range late yesterday with another member here... I broke out as many of my M&P's as I thought I could shoot...
.... took all the 40taaaas.. the Shield, compact and FS... they were all still a blast to shoot... even brought my 45fs.. forgot how amazing a shooter that 45 is.. sorry, I didn't bring my Shield 9, but the 40 was still easy shooting and target acquisition for me. My friend brought his Shield 9 though so you was represented.. for 9's, my Vtac and 5" PC were just too easy to shoot... did all rapid shooting and from 25yds since we were on the rifle range and too many guys shooting rifles..
My vote still goes to the Shield or M&P9c if you want more capacity.. if you haven't shot one try that too..