The Les Baers are some of the most accurate AR15's on the market. If squeezing the last bit of accuracy out of the rifle is your goal, Baer is your answer.
The Colt is a bit looser in tolerances, and is better suited to using military ammo under field conditions. If that fits your needs better, go that route.
I'd be a better listener if you stopped talking about stupid crap that doesn't matter.