I think it's a really great, fun game. Online works great, has a daily leader board, overall leader etc. Play a random match or against a friend online. Plus you can team up with a local friend and play 2v2 matches which are whole worlds of fun.
I haven't even touched the single player mode yet, just VS and online.
The music is great, the graphics are fluid and never a slow down (which is utterly mad when you consider the audience is completely 3D).
I really recommend it. IMO the best multiplayer game since Melee and a game I'm really happy I bought.
Controls are very intuitive. I've found myself throwing my arms all over the show as I get more engrossed in the game
But-
-The action is
very fast. I haven't played any sports games like this before, at all, so I can't compare on the speed front. But it does get very hectic and it's really easy to lose yourself.
-I can only play in short 5 point matches. I think it's linked to the above point and I just get mentally exhausted.
-Character introductions will get annoying