I've not had a problem with a Leupold up to this point, own at least 10. I would like to say that they have top notch Customer Service. A couple years ago I picked up an older Vari-X III 2.5-8 at a pawn shop for cheap, it was pretty beat up. I figured I could give it a Krylon paint job and have a good scope. I sent it in to Leupold for a free check up. About a week and 1/2 later a woman from leupold called and asked if I liked matte or gloss better. She said the scope I sent in was to old to work on, so they sent me a brand new VX-3 2.5-8. She never did say what was wrong with the old scope. I will continue to buy Leupold for all my rifles whether it be used or new.