I think I have finally narrowed it down to either a Colt 6601 or a Bushmaster XM15 E2S A2 both 20 inch barrel. I plan on using the rifle for protection and plinking. Is there any benefit for getting a Bushmaster A3 instead of an A2? I might get a scope in the future, but like the look of the handle. Is the detachable handle on the A3 durable? Is the Colt or Bushmaster more accurate? Finally, if I can't find any persuasive arguments to push me one way or the other, I think I will go with a Bushmaster since it's cheaper and I'm told they have better customer service. Any information and opinions are welcomed. I think I could get the Bushmaster A2 for about $750 and the Colt for $840. Are these reasonably prices? Thanks