My girlfriend and I just recently rolled some horde characters on Aegwynn, mostly because her brother is on that server. We haven't played very much there, but it seems like a pretty decent server. Even though it's set as a PvP server, I have yet to get ganked -- something I could not say for my human warlock in his youth on Emerald Dream...
The only downside for you might be latency. Maybe narrow the field down to your top three choices and see which one performs the best.
Good luck!