RE: Heckler & Koch USP Tactical .45 ACP
HKs are excellent firearms.. no bones about it. The tactical is threaded for a suppressor and comes w/ a nice little soft case. If you're never going to use a suppressor.. don't get the Tactical.
Another great .45 to check out is the Springfield XD45.. awesome gun.. only $500-550. It's one of our best selling guns at the store I work at.
I personally just bought my 1st .45... and it's a Kimber.. another excellent choice.. but a totally different gun than the above two mentioned.