blue jean cable has some 10 awg that you could get in the hundreds or dollars rather than thousands and see how it sounds. You could even try bi-wiring as well. The larger gauge wire is just what the doctor ordered for long runs. I wouldn't purchase any speaker wires that were not very large gauge.
At that length you should really be able to tell the difference between cables. It seems that most agree that resistance is the biggest factor to consider so start with large gauge and go from there.
At that length you should really be able to tell the difference between cables. It seems that most agree that resistance is the biggest factor to consider so start with large gauge and go from there.