alremkin,
I don't have any experience with his rings, but I have three of his bases. Richard's bases are top drawer. I would put them up against any bases available. The only drawback to his bases is he doesn't seem to make any zero cant bases. On the flip side he is the only mfg. I know of who makes 10 moa bases on a regular basis. If a shooter is only going to 600 yd. max a 20 moa bases is hard to use at normal distances, where the 10 moa seems to come back to 200 yd. without using all of a scopes elevation. I am sure his rings are of the same quality as his bases. Some mail order house is stocking his bases, Cabela's or Brownell's, I don't remember which, as I always e-mail Richard and the stuff appears at your door like magic.
hope this helps
joe