spkr cable: copper, silver or combo/hybrid?

I'm buying Alpha Core Goertz MI-2 Veracity. They have a Python MI-2 bi-wire as well that is in your budget. If you want to experiment they also have a Python Hybrid bi-wire, but it will cost you more. Like you I also use silver ICs (Nordost Red Dawn) so I'm hoping the copper acts as a neutralizer. Money back guarantee ensures if you don't like them you can return them.

I would suggest you audtion a pair of Acoustic Zen Satori speaker wires that are about what your budget allows, used that is, which offer great performance and compete with much more expensive wires. These are copper wires and no you will not negate the gain of your silver but add smoothness and liquidity to your overall system. Hope this helps, but remember you always have to audtion any wires in your own system and let your ears do the deciding.

Some misunderstanding here: my interconnect is not pure silver but a copper/silver hybrid. Silver ICs I found to be too bright in my system. That being the case, can I expect that silver speaker cable will also be too bright or will it simply be more accurately revealing of the detail disclosed by my SR IC which has a smooth, non-harsh quality?
Also, AZ Satori bi-wire speaker cable, even used, is not in the budget range I indicated.

Try the non-cables advertised here on Audiogon. They are very cheap, and they will surprise you, or if you have some telephone wire, try single lead runs as per the 47 Labs wire, or some cat 5 wire if available - bare leads, no connectors, reverse the directionality of hot and ground wire so directionality is constant for the entire run. Run the cables as far away from anything electrical as you can. Give them at least a week of music play time to burn in. At least you can have some great fun while you save up for those megabuck cables, and you might decide you don't need them!
Above all, enjoy youself! I own a megabuck system, but if I like the tune, I don't care if it's playing on a cheap AM radio - I'm still going to dance!