The best website to buy socks, that I know of, is luxsocks.ru
But they charge a hefty registration fees of 300$, but they accept bitcoins too.Almost all of the socks that they provide are white listed and works with paypal too
You can contact me if you want to buy any sock from lucsocks, I can sell you freshest proxies for a small fees
No need to pay the registration fees, if you are interested then PM me anytime.
Good luck!