I am not a big dance movie fan, but I have to admit this mix of the somewhat raw energy of streetdance and the controlled grace of ballet is enjoyable.
First and foremost the brilliant streetdance choreographies are what make the movie worth seeing. The story on the other hand is mostly very predictable and does not offer anything new. I also have to say, that I think you can just as well see this film in the normal version as there were only two scenes with motion directly towards the camera. To me that is the only big difference the relatively new 3D technology makes. I always enjoy when objects or people seem to leave the screen and fly directly towards me.
In a movie where most of the time a lot of people are in motion, I would have expected more of that and think it could have been achieved easily by using more different camera positions. Of course that is much easier in the animated movies, such as Avatar or How to train your dragon. A few mouse clicks did the trick in those cases. But I guess as filmmakers are learning to adjusts to this, we might see more true 3D shots in the sequel.