The brand of scope is extremely important, not only for clarity and durability but also for warranty. Vortex scopes are superior to these issues, extreme clarity, durability, ability to move 4 clicks and actually move 1 inch instead of two or three, and they hold their zero. The best part is that they have a lifetime unconditional warranty. You break it and hand them the broken one, even in pieces and they hand you a new scope in return, no questions asked. I don't know of any other scope manufacturer that offers that kind of warranty.