Is it worth it? I'd rather a PS3 but am getting pressured into the wii. I'm hearing they are quite a bit of fun, and good for when people come over. I've always pictured it as more of a young kids toy and not having the good FPS games like PS3 and Xbox. Any truth to this? Do they have to be modded to play downloaded games? Can they play downloaded games? Can you play online like PS3 and Xbox?