I've tried a few long balanced cables over the past year between my preamp and amp. These were all DIY using high quality connectors (Cardas and DH Labs - plated high-purity copper conductors). My cable runs are about 16ft.
Belden 1800F - this is one of the cables that Blue Jeans Cable uses. Fairly neutral balance but lacking a bit in bass authority, image depth and clarity. < $2/ft. Stranded copper with foam polyethylene. Tinned copper braided shield, PVC jacket.
DH Labs Pro Studio - this is my favorite in my system. Slightly more forward sounding than the Belden, but better in every way - stronger, more defined bass, much better imaging, more detail. $8 to $11/ft. Silver coated stranded OFC copper, foam PTFE insulation, braided silver coated shield.
Connex The Natural - This cable sounds warmer and more laid back. Good bass, but not as detailed as the Pro Studio. If you're looking for a smoother sound, this might be worth a try. $6 to $8/ft. Tin-plated copper conductors with natural cotton insulation. Conductors are stranded, but relatively few heavier gauge. Tinned copper shield with woven rayon/nylon jacket.
As far as I know, the DH Labs and Connex cable are only available as bulk cable. The Belden you can get from BJC very cost effectively.
