Go with the Burris Zee rings, and the pos-align inserts. Three main benefits. (1)The insert does a great job holding the scope in place, (2) it prevents denting the scope tube, (3) makes adjusting the scope a breeze.
I mounted a Nikon 1.5 X 4.5 on my .44mag Anaconda. Scope ran out of internal adjustment before it would hit the center of the target, so I had a local shop shim the scope. The shims allowed the scope to move. When I opened the rings, to replace the shims, I found a small dent in the scope tube from the ring. Switched to the Burris zee ring and pos-align inserts, and eliminated the possibility to further dent the scope. Found it very easy to use the pos-align inserts to get the scope sighted within 1.5" of center. Used the scope internal adjustment for the last 1.5". Since I put these rings on, I've had no problems at all with the scope moving.