Armalite is the best balance (IMHO) of being well made, having a proven track record, and shooting well. I disagree with the hideous comment, I think they look nice. If you want a chrome-lined barrel, I'm not sure anyone else makes an AR-10 with one.
DPMS is significantly less $$ and gets good reviews, and is currently available to buy. Would be my 2nd choice, or maybe 1st if I wanted a caliber other than .308.
RRA LAR-8 may be great, if you can buy one. They don't seem to be really available yet. I tried both calling and emailing RRA a few months ago and couldn't get through either way. I guess they weren't interested in selling just yet.
SR-25 is in a different price range, I think.