I stopped by Gander Mountain the other day to look over the 9 MM autos. The M & P and the XD felt the best in my hand. Since I've had S & W revolvers over the years and loved them, I decided to go with the m & P. I compared the full size with the Compact. It didn't seem like much difference to me, very little. I decided to buy the full size. I'm not sure how much concealed carry I'm going to do but figure I could hide the larger one just as easy and have a pistol I could shoot better as far as accuracy goes.