RRA, like anything, you're getting what you pay for. You run with their top of the line components, and their as good as anybody. I have a Colt and a RRA... now what I'm thinking is tops, in the market, right now considering ARs, in DD's M4. I drool everytime I see one.
(next on the purchase list)
I only have experience with this rifle, but my RRA is nice. Had a small problem with the LPK (assembled myself) where the disconnector needed a shave off of the nose, but other than that everything functions A-OK.