Just recently tested three cables:
- Lava Magma
- Lava Blue Demon
- George L's Master's series cable
all 10 ft
Verdict: Increasing treble content for the 3. Geroge L master's has the most treble content, no tone suck. Blue demon comes next, balanced sound, while magma comes last. Well, you get what you pay for. I'm guessing soar and ultramafic is in the realm of the George L master's or even better.