...I load on a Lee classic turret and Dillon 550. All my dies are Lee and with the Lee lock rings I have never had a die go out of adjustment. So how are any of the others better than that?
It depends on the type of press you are using. For a single stage you probably want a lock ring that has a set screw so as you screw it in and out it won't move on the threads and lose adjustment.
I sure would like to hear how Lee o-rings are more repeatable or in some other way, superior to locking rings.