What IC's ans Speaker Cable for VAC Amps?

I'm experimenting with different cabling for my system which consists of a VAC Phi 110/110 amp, First Sound Presence Deluxe II preamp, EMC 1-UP CD player, and Von Schweikert VR4 SE loudspeakers. I'm presently using Ridge Street MSE II from CD to pre, AZ Matrix Reference II from pre to amp and Canare 4S11 speaker cable.

I'm aware the speaker cable is the weak link, but I have 30 foot runs, and that limits my choices. I'm going to be auditioning MAS hybrid speaker cables soon.

I'd be interest in hearing from VAC owners about what cables you've found to work well and where. Of course, other tube amp owners are welcome, too!