Yep, we're developing a nice little community of boxers and have been doing at least some of Naxx together for the last few weeks. VoA too.

Anyway, we'd be glad to have you if you want to join us, but if PvP is your main focus I can't tell you much. I PvPed a ton on my alliance server (both BGs and arena) and kind of got sick of it. I got 25 WG tokens for all my toons here on Mag but don't have much desire to do any more. There are others on Mag that enjoy it more.

Whatever you do, make a solid choice - selecting a server tends to be a long-term (or very expensive) decision.