I havent played WoW, but no one here most likely haven't played d3 either.
Most say they dont like wow and saying its shit because of the pay to play. Im not a wow fan, but I play Aion, and thats a fun game and people tell me that if i like aion i would really like wow. So its I would have to say its a pretty bad ass game.
Then theres D3, we really dont know much about it except the videos and the information they gaved us. If they were to release demos to play it would probably attract wow players like wow attract d2 players.
to get straight to the point. I voted d3. Why? idk. I just like d2 over others

(Im a old school Nintendo player, so i really dont care how good the graphics are on any game)