Long Run Speaker Cable Suggestions


I'm considering replacing my 30 foot run of Canare StarQuad with a higher quality cable. My installation requires maintaining this 30 foot length, and the diameter of the new cable must be no larger than StarQuad (5/8") because of the in-wall run. Any suggestions?
tvad
Thanks everyone for the suggestions so far. My system consists of: EMC
1-UP CDP, First Sound Presence Deluxe II preamp, VAC Phi 110/110
amp, Von Schweikert VR4 SE loudspeakers, Kimber Select 1030 &
Acoustic Zen Matrix Ref II interconnects, ErnieM Power Cords, Quantum
Symphony Pro and ElectroClear conditioners.

I have to admit I'm not likely to try the Home Depot cord. In order to
replace my StarQuad 4S11 I'd have to be making a significant step up in
quality.
Just remember, it will cost you less than $20 to discover whether or not the HDs are "a step up in quality," however counter-intuitive it may appear to be. In any event, good luck and good listening.
I've just put a 30 foot run of MAS Signature Hybrid Loudspeaker cable into my system, and at this point I'm stunned at the improvement. The imaging is holographic. There is detail and roundness and musicality. There is absolutely no edginess, grain or hash. I don't have a world of experience with different speakers cables, but these have transformed my system at an unbeatable price. Highly recommended (until the next epiphany, of course).