My primary use will be target shooting and a little varmint hunting.
You could do much worse than RRA for your intended purpose.
If hunting's in the mix, I think I'd go with a lightweight instead of a heavy barreled gun like a Predator? I guess it depends on how much moving you're going to be doing?
I think when I bought my two RRAs (got a couple of Colts also), they were 'bout the only folks that guaranteed X accuracy - think my Entry Tactical and LE Tacticals both had a 1" MOA guarantee on 'em. Some other folks may have guaranteed accuracy, but it was usually buried deep in the fine print (RRA always stuck theirs out front), and they never seemed to have quite the accuracy guarantee of the RRAs.
RRA is also known for having some of the best workmanship / quality on ARs - I've seen numerous folks at the shop buy other brands, then get an Accuwedge to take out the slop between the upper / lower (yeah, I know it's not supposed to affect accuracy, but I like the close tolerances of the RRA upper / lower).
I think someone in here recently posted on their build of a Stag? lower and RRA upper, commenting on how much better finished the RRA upper looked (he knew this ahead of time).
Anywho...it does appear Daniel Defense or Bravo Company (and of course, Colt) get good reviews in the ultimate reliability department, but a lot of stuff folks knock RRA for AFA (theoretical) reliability are relatively easy / cheap fixes which you could do first time you have to swap parts out for maintenance (if you do).