Which one is better monkey ball - banana blitz or monkey ball - step up? i cant decide, which one is better?

While neither of them are very good for Monkey Ball games, I'd go with Step Up. Banana Blitz just falls flat with lackluster controls, and outrageous difficulty. While Step Up isn't much better, I'd recommend it more. But if you're able to play Gamecube games on your Wii, I'd recommend Monkey Ball 2 a lot more if you don't have it.