Wow, buzz. Tell us how you REALLY feel!
The M&P is NOT in the same class as the Glock or the XD-45. Sales show that clearly. I can think of three or four other better weapons than the S&W IMNTBHO. The Glock 21 is a 2x4 with a slide on top, for sure, but I'd buy it any day of the week over the Smith. In fact, here's how I break down the new double-stacks:
XD-45
USP-45
Glock 21 (SF, I guess, but even with the big grip, the standard 21 is better)
Taurus 24/7 (Yeah, and I own a PT-145 Pro... and love it)
Para Ordnance P14
CZ-97
S&W M&P 45