I would rather buy the ROCK RIVER ARMS, STAG ARMS, & PALMETTO STATE ARMS ar-15 which are in the same price range
I would saw PSA is awesome
Bottom of the barrel would be anything made by Vulcan, Hesse or Blackthorn. If encountered, run away, post haste.
I have an LR-308 and it is an absolute tack driver.
I always wanted an .308 ar15/ar10...I've heard they malfunction a lot.
Have no experience with the 5.56 DPMS AR's, but I have a LR-308 I assembled with all DPMS parts - Upper is a Stainless bull barrel. The fit and finish in my opinion (and I collect guns) is as tight and smooth as my Remington 700, Colt's and Winchesters. In other words it is as well fitted as any gun I own. The action is very good, I have only fired a few clip's through the gun but it appears to be less than 1 moa accuracy, and has had no issues yet - don't expect any. I would not trade it for any other AR or .308 AR style rifle I have seen. I sure don't consider it "low quality", I have about $1500 in the rifle including a Vortex scope.