I have several Sig P220's with Trijicon Night Sights and love them. I decided to get some for my H&K USP. I paid a person to install them since I don't have a sight pusher. My only complaint is that the point of impact is high right over the sites rather than behind the front sight. The model I got wasn't adjustable so I have to live with it. Not a show stopper just different.
Pros: Easy to see, Reasonably priced
Cons: sight picture high for some reason
This review was written in the old system and had content requirements that are different than reviews written today.