I've had cheap RCA cables hum when placed near power cords/mess of cables under desk. I've tried many different speaker cables, and the only difference that I could find is they look nice (even though you don't see them) and are built better. Optical Audio, USB, and other digital cables either work, or they don't.
Since headphone cables are just carry analog signal, like speaker cables, I doubt there is much of a difference. Don't waste money on fancy cables, you'll get a much more noticeable increase in sound quality by upgrading your amp/dac/headphones.