Wii Fit vs DDR

I've been wanting a WiiFit since forever. Not only would it help my lazy butt get some exercise (and hopefully in better shape), it's also really fun.

BUT - I'll never be able to afford one. First I would need to purchase the actual Wii console, then the balance board, the game itself, and now Wiifit plus to complete the experience. The official Nintendo Yoga Mat and the matching water bottle would be nice too.

Anyways. My old DDR for PS2 would do for now. That is - if Matchan (and my neighbors) would even let me play it.