Agreed. I have the Armalite 10-4 and it's a real machine. Flawless performance and accuracy I had trouble accepting out of an AR platform at real distance.I think the Armalite is best. But, DPMS is the most popular.
TAGGED for future Reference ...I own a DPMS LR-308. This is the 24" bull barrel model. It has a harris BRMS Bipod, and a cheap CMMG 2-stage trigger. Nikon Buckmaster scope. My best group to date is .80" 5 shot group at 100 yards. I Love this gun. I have a total of about 1500 bucks into the whole thing. It loves federal gold medal match 168's.
That's most bucks for the bang... You could probably buy an 5.56 AR for the price of the "proprietary" 5.56 upper. Not that it isn't cool though.I say wait for the new Colt. I think it's the LE901 and it can shoot 308 and 5.56 with just an upper change.