Clearview Golden Helix and Double Helix cables

I have been receiving a catalogue for several years from Mapleshade Music. Besides CDs, they offer IC's and speaker cable, many audio tweeks, and modded Scott amps and tuners. They off two levels of speaker cable with upgrade options. The prices are reasonable. Nevertheless, has anyone ever tried either of them?? If I can save a few dollars without going to almost mega-abucks speaker cables, that would be great.