I've seen it twice now. First was 2D with Atmos the second was IMAX 3D.

This movie didn't really need the 3D. It was done OK I guess but I kinda liked it better in the 2D format. Thou the one scene that was filmed in IMAX was really cool to see that way.

Sound wise I also didn't feel like they mixed it in Atmos very well. Compared to a few other Atmos movies I've seen. The IMAX theater was quite a bit louder. Not sure which I would say sounded better.

As for seeing the movie a second time, I did enjoy it more. I think I was fighting expectations and over thinking it too much the first time I saw it.