Bass Cable-Copper or Silver?

Agree with Sam: try to keep the same brand when biwiring. My general perceptions of silver: brighter & more forward. Copper: warmer & more rounded, which would seem to be a better bass cable for you. There is no "best" you just have to try them out per your personal preferences. I generally like copper better, but silver (interconnect) was by far preferred for my phono.

Forgot to mention Bob Cohen at Cable Company www.fatwyre.com (y'all likely know him) may offer some good advice/suggestions + you can try cables from the lending library for a negligible fee. Regarding the Sluggo sentiment: are you going to continue your abuse until Audiogon permanently kills these chat-sessions (they are quite fed-up with your ilk, as are most of us here). This is another perfect example of the reasons they're threatening to shut it down. Take your abuse to AudioReview; you'll have plenty of company. We're interested in helping & advising each other here, so please go away.