I don't think you will go wrong with a glock, XD, or M&P. I have shot them all and they are all very reliable and do what they were designed to do. I would suggest trying each of them out at your LGS.
I moved to M&Ps due to feeling best in my hand when I shot it and having the M&P22 as an additional (cheaper) training option. Also, I was able to purchase storm lake conversion barrels in 9mm for my M&P40s. They run 9mm perfectly with just a barrel and magazine switch out. It will run 9mm from 40 cal mags, but I feel more confident in feeding using 9mm mags.
There are some complaints out there about the trigger on the M&P. S&W copied apex tactical's trigger kit so new guns coming off the line have that problem solved. Spare mags are hard to find right now due to the surge.
As far as 9mm vs 40, my former department tested them both thoroughly and found very little ballistic difference when using modern bullets.
I moved to M&Ps due to feeling best in my hand when I shot it and having the M&P22 as an additional (cheaper) training option. Also, I was able to purchase storm lake conversion barrels in 9mm for my M&P40s. They run 9mm perfectly with just a barrel and magazine switch out. It will run 9mm from 40 cal mags, but I feel more confident in feeding using 9mm mags.
There are some complaints out there about the trigger on the M&P. S&W copied apex tactical's trigger kit so new guns coming off the line have that problem solved. Spare mags are hard to find right now due to the surge.
As far as 9mm vs 40, my former department tested them both thoroughly and found very little ballistic difference when using modern bullets.
