I vote DPMS platform. It is hard to beat the price on 7.62 PMAGS.
The dpms 308b is an absolute tack driver. Some dpms rifle are going to function better than others though. Cmmg has some great options coming out soon like the mk 18.
CMMG's .308 has been out for better than 6 months. Are there additional options coming out?
I have one and it has functioned flawlessly.