I had a tasco where the reticle came loose. I had a Simmons where the windage turret came loose (also part of a Savage package). I have a nearly identical Simmons that's still going strong after about 10 years. I had a Bushnell Sportsman that was mechanically sound, but the parallax was bad and the image clarity was horrible, it seemed to be always just a tad out of focus. I've had a couple of Leupolds for quite a while that are trouble free, and a Bushnell Legend that seems good quality. I generally treat expensive scopes a bit more carefully.