My vote is the XDm 45. Flawless.
I bought my first gun in May. I did my research and had it narrow down to four 9mm pistols - the Glock, Sig, M&P, and XDm. I was really leaning towards the M&P as my instructor highly recommended it, however, as soon as I held that XDm, I knew it was mine. Since then I've also added the XDm 9mm compact, which is what I use for carry. So my advice would be to try them both out - you'll know which one is the right one for you.