Good PvP server

[Grapedrink1005]

Hey everyone. I'm looking to play world of warcraft again when cataclysm comes out. I was wondering if anyone knows any good servers to play on? I was looking for a server that wasn't too badly over populated in favor of either horde or alliance. Of course, I want it to be a pvp server, and also would really like it to be a US east server. Good pve progression doesn't hurt either.

Do such servers exist with balanced horde and alliance population in the east? Thanks for your help.