I've always been a little unsure of the importance of cables myself, but decided why not and purchased a few sets of the Ultra 1000 THX speaker cables for bi-amping and found them to be noticably cleaner and provide more power to the speakers (i.e. I can't turn up the receiver as loud as I used to without being uncomfortable). I got the same series subwoofer cable and lost the faint hum I used to hear in my subwoofer. As they compare to anything else, I don't know, but the composition seemed similar to the Better Cables stuff and I walked in Circuit City and bought it without waiting on an order.