Looking for something QD, durability followed by repeatability and tone are my primary concerns. I'll be throwing this on a 24" schneider barrel USMC contour. I have one of the older AAC's that is *ok* but I've been hoping for something without as much shift, not sure if the new AAC's have improved upon that or not. Surefire seems to be good but I'm not so thrilled about spending 1800 on a 308 can if somebody else makes a better alternative. Any suggestions are appreciated!