I have shot the full sized Kimber Ten II and own an Ultra Ten II...both excellent guns. I also have both a full size and compact USP in .45 My old agency recently issued H&K USP's in .45 and is very happy with them...they use the LEM (Law Enforcement Module) triggers...no problems at all for a year or so now.
Me personally, I would probably go for the Kimber because I have carried and shot SA 1911 type autos all my life...or at least for most of the past 40 years...and I am very comfortable with them. For agency-wide use, the H&K...especially with the LEM...makes much more sense and, across the board, will be a more reliable gun for service work with most cops. (And, remember, the H&K has the rail for mounting goodies...the others do not)
I am not a big fan of the Paras in general, although I had a P14 built that I liked very much. I would stay with the Kimber or H&K.
Just my $.02 worth.