I have a Remington 700 in 308 with the barrel cut down to 16.25" that I need a scope for. The intended purpose for the rifle is medium range distances (inside 600 yards) and carryability. Right now, I am looking at the Vortex Viper 2.5-10x 44mm and the Burris MTAC 3.5-10x. I'm mainly concerned with the glass quality, durability/repeatability, 30mm tube would be nice for a lot of adjustment, and good turrets. I'm not as concerned with the reticle. What would you guys recommend for a scope with these features and for this purpose in the $400 price range?