As a Deputy Sheriff, I carry a Glock 20, 10mm as my primary while on duty and a Glock 29 10mm as my primary back-up. I have a Smith & Wesson M&P 45ACP that feels like it's an extension of my hand, however with the small capacity of the 45 mags (10 rounds), in the M&P, I reluctantly carry the 10mm Glock (15 round mags), which is the better caliber in my opinion anyway, just not the better gun, because the M&P 45ACP shoots circles around the Glocks where accuracy is concerned. If Smith & Wesson would make the M&P in 10mm and have the 14 to 15 round mag capacity, I would crown it the perfect handgun for Law Enforcement and I'd definitely be down for purchasing a couple of them. I bet if Springfield decides to make a 10mm in their XD series, that Smith & Wesson would lose a lot of their M&P sales to them, and visa versa. The Sprinfield XD series ranks right up there in comparison with S&W's M&P series as far as accuracy, reliability, looks and ease of use. The XD's beat out the M&P's on magazine capacity, but the grip on the M&P's are much better than the XD's. When I feel the grip on a Springfield XD gun, it reminds me of a Hi-Point.