I couldn't make up my mind either so I have more than one on your list, here is my rating of each and links to some of them.
[b]HK USP .45[/b] - It is big, shoots great, reliable as hell, accurate, and did I say big?
[b]Glock Model 30[/b]- [url]www.glock.com/g30.htm[/url]
For some reason this is one of my most accurate pistols. If you like Glock pistols you can't go wrong with this one, or the Model 21 full sized version, or the Model 36 single stack.
[b]Colt[/b] - I don't own one, so somebody else can do this one.
[b]Beretta[/b] - I don't own this one either.
[b]Sig[/b] - Accurate, reliable, probably more expensive than average, magazines expensive, but a good gun.
[b]Kimber[/b] [url]www.kimberamerica.com[/url]- I own a stainless Gold Match .45 pistol. It functions well, shoots great, its big, wouldn't carry it, but I use it to train with because it is accurate. It shoots very accurately.
There are many more, I even own a pre-deal S&W Pro Shop Tactical .45, but I am not that impressed with the gun. Even from the Pro shop the gun has tool marks all over it whereas the Kimber guns I have seen are always polished out. Les Baer, Nowlin, Springfield, and many many more brands are available.
Just pick one you like that everybody doesn't have bad things to say about it and go for it.
Good luck.
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