Weshoot2,
I'll put my Glocks, 17,20,21,22, up against ANY steel framed auto for reliability, durability, and any other parameter you care to mention.
Contrary to popular belief, most law enforcement agencies will not issue anything but the best available to their officers, regardless of cost. When you can get the best, and it's also reasonably priced, that's icing on the cake.
Having said all that, I still like Sigs better than Glocks. But I must admit that if I were sheriff, my deputies would all be carrying Glock model 17s.