Well, I'm going to go see it in IMAX 3D, just so I'm completely absorbed into the movie. But, I do have to say, the 3D effects were good, but not jaw-dropping spectacular--although, I don't know of any 3D movie that is.
Overall, I never can really recommend 3D over normal 2D since it's a gimmick; plain and simple. However, I don't think any of the IMAX showings will be in 2D anyway.