From what is mentioned, I say M&P. I am picking mine up this week.
You can't argue with the success of Glock. I would be very comfortable trusting my life with that gun, except that it feels horrible in my hand. I wanted to like them, but I can't. It doesn' feel natural.
I like the XDm, but when I pick up the M&P, it feels great to me.
Any will serve you well. Good luck.
Edit: Not mentioned here - but you may want to consider a Stoeger Cougar. I have one & LOVE it. Not a great carry gun, but a fantastic shooter & great value - IMO.