I've shot both and owned a USP. They are both light weight and great for throwing in a ruck. I personally LOVE the USP, it is an awesome weapon. I was shooting an IDPA match with one of my buddy's Glocks. I got to the second station and went to fire, the front sight was missing. We had to stop the match and everybody was in the grass looking for this idy-bidy black thing with a white dot on it. Since then I really haven't had faith in Glocks (everybody goes off their experiences). The Safety/decocker on the USP makes ALL the difference in the world, it's awesome. Well, that's my opinion. Good Shooting!