I used to play stepmania, haven't owned DDR myself, though I've done it a couple times. Now I can't get back into it as much since I've gotten into things like Guitar Hero and their older games like Frequency and Amplitude. I like the feel of when you mess up, that part of the song actually stops playing. In DDR the lack of that kind of feeling sort of takes away from the gaming experience IMO.
"A lot can be said by a 3xosc with a dissonant melody and the right insert effect." -DeadMau5