Power, it all depends on how much your 30 mm scope is going to weigh on what types of rings to buy. If it weighs more than 20 ounces stay away from the Leupold/Redfield front dovetail setup. You' ll have to go with a more sturdily constructed setup like Badgers,Near or something along those lines. If it weighs less than 20 then the Burris signature system is the most secure and will not mar your scope tube. I think Leupold Qrs are ok but nothing to write home about. If I were in the quick detachable market I would buy Talleys and not think twice about it.