Ive tried other bases like Burris, and T/Cs weaver style but nothing works better then Weavers block base for the T/C. Unlike the T/C version, and Burris, Weaver doesnt taper the bottom of the front of base. With the base the same dimension through out its length theres less chance for flexing do to changes in ambient heat or barrel heat (IMO).
I really like the Burris Signature rings. I have installed Signatures on 4 Encore barrels and 4 Rugers. They work every time I use them, no fuss no muss, no lapping, no triple checking the alignment of rings. Ive never had a scope move after installing them.