360 is by far the best when it comes to online games. But from the sounds of it, you don't have online stuff yet. Also Xbox Live is $50 a year, while the PS3's and Wiis will be free.

Elebits has an element of online, and so does Dragon Ball Z to a much smaller extent.

In Elebits, you can create your own stages and send it to people in your address book.

In DBZ you can create a customized character, and get a password for them to send to whoever you like (in your address book or through a computer chat or whatever)

Online real-time multiplayer, Nintendo may be holding out for Pokemon, but they might let some sports games go first. There isn't a release date yet for Pokemon Wii, but the DS game doesn't come out 'till April. That's a long time to be waiting, I'm sure there will be something else before Pokemon to go online. I hear there's some baseball game with 'Big' in the title, that might be it.