Pick one you like shooting the most. When I was getting into handguns I was down to the XD, M&P, and the Glock. I ended up going with a Glock because of how I shot them, not based on some spec list. All of the specs in the world don't mean a thing, if you don't like shooting it. I ended up liking the Glock and XD more than the M&P, but you may be different.