I'm surprised no one's tried to force a gun not on your list down your throat. Wow!
You really can't go wrong with any of those guns on your list. Like someone else posted... its just figuring out what you want first
Go for the Glock or the USP. I swear by my Glock and my buddy loves his USP. We both got ours at about the same time and we haven't had a single problem with both.