speaker cable suggestions

Ready to spend real money?

I would suggest trying Purist Audio Colossus used. Not really expensive. If you like them you could either keep them or move up to Proteus; if not - just sell them.
Or some Stealth Audio cables.

Stingreen, I agree with you about Cardas but totally disagree about Purist. Colossus is not heavy in the bass, it is just right. Nor is it recessed on top though it doesn't mean that you can't do better, you can. And midrange is just excellent. So, in my opinion, this is one cable definitely worth trying; or as I said Proteus.
Yes, of course, systems vary as do preferances.

There is someone here on Audiogon, and he posted his system, who uses Jadis electronics and speakers. He said he tried many cable brands and chose Jorma, that's Swedish quite expensive brand. You could try it too.