To me the XDm fits my hand way better than the M&P. The XD is a blocky gun though. If I had to rate it I'd go XD < M&P < XDm.
To each his own, TR
I admit that I really do like the XDM, but I still think the M&P has it beat in the ergos dept. For my hands, the only thing that trumps the M&P as far as comfort goes is the HK P30... it's a shame I can't shoot it worth a crap!
Then again, I really like the ergos on the Gen4 Glocks too... so whaddew eye no?