I've only shot one and I didn't really like it. Odd, because I get along fine with the VE series Sigmas and a other guns most people abhor for their triggers. i think the thing that put me off about that particular gun was that the trigger had take-up, which I like; but then it turned to mush with a little gravel thrown in. It may have just been a substandard specimen... I've shot other M&P's and while I don't exactly like their triggers, none were as lousy as that 45.
The 45 also seemed to kick harder than it should. We were shooting a 1911 with the same loads so I'm sure that wasn't my imagination.