I agree that biwiring is definately better. I even noticed definite improvement in biwiring speakers with only one tap. I have experimented with double runs, and single biwire runs, but never with the same cable in both versions. I ended up going with two separate single runs as I also have an amp that has two sets of speaker taps, I don't really know if it is a lot better than the biwired cable version though, it is a lot more expensive though.
Bi-wire cable versus 2 sets of cable
If I have an amp with 4 connectors (for bi-wiring) and speakers that are bi-wirable, do you get better quality sound with two separate speaker cables than you would with one set of speaker cables that are bi-wire (2 prongs on one end and 4 on the other end)? There would be a cost to two separate sets of wires, but is it worth it? Please help. Thanks, Scott