The only scope I ever use on a big game rifle is a Leupold Vari-X II, in 2x7. I love them . I have never had a problem with them. Most of them I have purchased USED at large gunshows, for about $125, and I have never had a problem with a used one either.
I will say that on one of the used ones I bought, the adjustment ring was very hard/stiff to turn. I just sent it back to Leupold, and they repaired it for free and returned it to me in 10 days. No other issues.
Mannyrock