I'm not the AR expert and I couldn't decide. so I got the cheapest Bushmaster I could to start.  I was told it is A-B-C ,, Armalite, Bushmaster then Colt ??? so they say. 
Here is the AR I got.
E2S A1 M4 Type Carbine    
http://www.davidsonsinc.com/consumer...c=50&item_num=
Here I am shooting it 300 yards with a cheap scope on it  <$80 ?  I guess thats good, or good enough  
 
http://www.youtube.com/watch?v=y-WYUzAIb-8
I have no clue, I could just be lucky with the one I got and all the rest are junk? Or all AR's are better than I gave them credit for ?