I've got four CLE triggers - one for each of my AR's, including two CLE service rifles, a CLE spacegun, and a Colt flattop that I carry daily. I had some problems getting the triggers in the service rifles to hold adjustment to maintain the 4.5lbs. minimum to be legal in the SR match catagory in highpower & leg matches. A couple of shots of brake & parts cleaner degreased things, then the very smallest dab of #290 loc-tite I could get on the end of a toothpick, applied to the plunger tube & other set screws locked things in place. Been shooting both service rifles in all the matches I could make it too, plus practice, for the past couple of seasons without any more problems. CLE puts a hardened insert into the nose of the trigger's sear engagement surface so that it'll wear a very long time without changing - some of the BM match triggers don't have this insert. Either way, it pays to keep a dab of NECO MolySlide grease on the hammer hook/sear nose. So if you're shooting in a very dusty or sandy enviroment, you'll want to flush your lower out with brake & parts cleaner regularly, then re-lube with CLP & MolySlide. Frank sells the trigger for about $100, and since it doesn't require a different hammer, or springs, you can't get a better trigger for the money. I don't have any personal experience with RRA's 2-stage trigger, but I understand the only way to adjust it is by bending the springs. If you're not competing in HP matches, and don't have to worry about making legal trigger weight, you might want to look into the RRA trigger. For a single stage, I've talked to a few guys with the J-P, in combination with a J-P hammer, and they seem to like it.