Hi DennyDog, I think he gave up on the copper rings because of a high failure rate on the nickel anodizing. Mine is copper and highly tarnished now, but not too many people find that attractive.
I think the choice of weight is independant of the ring, but in my experience if weight is a factor then a spindle clamp is better. Actually, the Superweight is the only one of his weights that I prefered over the clamp I had been using. The reason I think has less to do with mass and more to do with the internal damping and polycarbonate shoe, both of which contribute to wide dynamics, neutral colouration and a clear open stage. I don't know of any clamps that are internally damped, but the Clearaudio Twister is solid Delrin and a good performer for the money.
Hope this helps. Happy listening.
Glenn