I typically look at how much the rifle costs, what will i use it for, and how precise is the rifle. Im a fan of tasco as well as BSA and Bushnell, I have a few of all of these and they are all great scopes. I dropped my old .223 out of a 20 tripod stand and killed a deer with it that night, Ive had it 6 years and never moved after I sighted it in. We have a Bushnell on our .22 farm gun, it rides the tractor, the back of the truck, the 4 wheeler, and have never had to adjust it. If i were to build a 3000 dollar gun, I would consider spending a grand on a scope, otherwise, couple hundred is about it. Just my thoughts on the subject.