Without having the capability to do multiple 10K round torture tests (if anyone wants me to do them email me and I'll give you my address so you can ship the ammo), I can compare the USP 9 and 40 to various SIGs, CZs, Browning HPs, Berettas, a Kahr K9, & a Walther P99.
My opinion is that it is a good all around gun although it isn't the best in any one category.
- It's light enough to carry but too big for concealment (P99 is better)
- It's out of the box accuracy is good but no better than an out of the box CZ (which is much cheaper)
- Reliability is no better than any one of the others I mentioned (which are all very good.)
- Trigger is way worse than P series SIGs or the Kahr, but certainly lighter than the Browning.
- Ergonomically (Grip and reach to pull trigger) much better than the Beretta, but not as nice as the Browning or CZ or Walther or SIG 229
I don't run over my guns with trucks or soak them in water for months on end, so I can't give you any opinion there.
Overall, a nice pistol but not my favorite in any one category. One last measure of reliability... My USP 40 outfitted with a laser sight is my nightstand gun. Size isn't an issue, and I know it will go bang when I need it to.
That's my story, and I'm sticking to it.