I'd go with the Signal Cable "Silver Resolution." Much better than their cheaper stuff but still very reasonable. My brother uses it tri-wired between Mac 501s and Mac XRT28's with great results. I still use a pair that have gone through a couple different systems, again always with great results.
Speaker cable for 25 foot run
I am looking at various options for speaker cable for a 25 foot run without breaking the bank. Amp is the McIntosh 6600 integrated and speakers are the B&W 805S. Am considering Signal cable, Morrow and Audioquest Rocket 44. All would be in a bi-wire configuration. Anyone with any experience, comments or alternatives would be appreciated. Would like to keep the budget in this price range (say less than $1,000). I know that Morrow has a 60 day audition period, but I know that most manufacturers don't offer this.