I have both Glocks and the M&P9c. I love, love, love my M&P. It fits my hand better, points very, very naturally, and has matched my Glocks for reliability. Zero malfunctions for any of them.
The M&P very quickly became my EDC. I was at the range with some friends a few weeks ago shooting a few different guns. One person commented on how naturally the M&P shot for me. So it passes the looks test, anyway. :-D
Both are fantastic firearms. My vote goes for the M&P.....for me.