thinking about putting an AR15 together as an "accuracy" piece,say maybe to 600 yd max. prob 1/8 or 1/7 wylde. looking $300-400 max for a barrel. yes,i know bartlein,krieger and lilja are superior. price to high for budget. actually walther a bit highish. so; ballistic advantage,jp,white oak are what i have looked at so far. anyone with multiple experiences with those 3 brands? i have about everything else needed. no,i don't need to hear "you just have to spend a lot more money because i do".