I usually build my AR's for around $500-600 and if I need one prebuilt I get one from Superior Arms for about $800.00. Most AR's (Bushmaster, DPMS, etc...) are just way over priced and are not any better then the ones I get. In fact I prefer the fit and finish of Superior Arms products over any other AR's.
The trick is getting an AR with a chrome lined barrel. I looked at Rock River, and Stag arms and none of their liturature states that while Oly will only state if the barrel is offered in stainless. Model 1 and says theirs does however as well as bushmaster. Whether or not your prefer a chromlined barrel is for you to decide. Me, I like stainless and two of my AR's have an OLY stainless barrel upper on them. As for Charles Daly, it's too early to tell if they are quality. I know everybody and their mother are cranking out ARs right now so the prices should be going down, not up.