I have one Burris and many Leupolds. The Burris is a Fullfield II 2-7x35. I can find nothing wrong with it's optics or construction except: the magnification adjustment knob was too tight, or too hard to turn. SO I removed a little screw and, thinking that the screw was too long and thus interfering with the knob's rotation, I ground a few thousandths off its length. Well, that made the problem worse. Now the adjustment ring wouldn't turn at all! So I called Burris and explained my problem. They said "Send it in. We'll take care of it. No charge."
Pick the one you want and go with it (magnification exceptions as others said). I think there might not be a dimes difference between either quality-wise.
