Well I have a Stag Arms AR-15 and I really like it. I had a hankering for a .308 semi. I was originally thinking of getting a M1A (probably a Springfield) either full length or SOCOM model. But after reading what I could find on both the M1A and the AR-10, the consensus was that the AR is generally more accurate.
So looking at the different manufacturers the DPMS got the nod for the best bang for my buck.