Good RTS for MAC??

Hey everyone I have a mac and I'm looking for a good RTS game that has a decent online community as well...the only RTS's that I've ever played were Rise of Nations and Age of Empires and Age of Mythology and I really enjoyed all of those, and am in the mood for another. so any suggestions would be great

also i dont run bootcamp and dont plan to so the game would have to be compatible with Mac OSX, which i know shortens the list

alright well i'm a pretty big blizzard fan (but the only game i've truly played is WoW...a little starcraft) and i've always wanted to try out warcraft III and diablo II so i guess my question is now should i drop the RTS to try out diablo or just stick with the RTS and wait it out until diablo 3???lethalpuma

If you've never played Diablo II and are anticipating Diablo III I'd say pick up the Diablo Battlechest. Of course if you're dead set on getting a RTS you could get either the Starcraft or Warcraft Battlechests. Glad I could be as vague as possible :D