ProtegeManiac
Headphoneus Supremus
Even the best cables you could get won't make more than 1% of a difference.. so save your money
I'm the only one who saved money by not buying the Sennheiser cable, thanks to how the local distro doesn't stock it, then shipping costs and import duties will just inflate the price, and someone here braided conductors for my cable for the price of a stock HD650 cable. I really hate the local distro - I called them up once to ask about earpads, and the guy who answered felt like he was talking to some alien on LSD, so I asked to talk to anybody directly working with Sennheiser products (they deal with other stuff too), then three minutes later I heard a click and the line went dead. I called several times over to berate anyone who'd pick up the phone before asking for their manager, and nobody answered. And to think that number I called was given by Sennheiser showroom staff.
Anyone who can get the cables online and within the same country, consider yourselves lucky and get those.