Well for durability I would almost have to put in a vote for the plain jane old style weaver rings. One set I have must be 30 years old. I mostly use zee rings now but in truth there are a lot of good base and ring setups out there. My thought is most are much more durable than the scope they are attached to so ring failure is almost a non existent issue in my mind. Best on the other hand is a somewhat nebulous word that can mean different things to different people.
