I like both, but not TW games for multiplayer.
For a really good (and I mean perfect - bliss) multiplayer game get

Age of Empires III

For a good C&C style multiplayer:

Act of War

I highly reccommend both these games above. They are VERY good RTSs both of them.

For a good FPS, try Battlefield 2. Not 2142 it sounds like a pile.