He didn't test the durability too much. However, there are many people that have been using these for quite a while. The other scopes don't seem to have issues holding up. So since they both hold up why would you choose one where the clarity is clearly not there in the Prostaff compared to others? Nor is it near as good in low light situations. I'm not saying the Prostaff is bad and wont hold up. There are just a lot better options that hold up fine too and are quite a bit clearer. So why not get one of those? That's what I'm getting at. Not saying the Prostaff's don't hold up. I personally like clear scopes and if I know both options will hold up I'm going to go with the one that is a lot clearer for not much more money.