i use alot of aluminum bases and steel rings. i love the way the steel bites into the aluminum. everyone has there favorite brands. i use mostly leupold PRW-S for rings. they use torx screws instead of flats. they also use 4 screws on the top. i also like Warne rings and bases too. they are just trickier to use because they use a key slot wedge that you need 3 hands to hold in place as you tighten down. I tried Millets but broke 2 sets of the angles claws while snugging down and they just never seemed to grab the base even. i hear good things about burris signatures but i never get rings marks when using one piece bases and a wheeler torque wrench. on my heavy recoil guns i put a coat of liquid electrical tape on the inside of the scope rings let it dry and mount. weaver steel grand slams are good too for the money.