Watched it in IMAX, really enjoyed everything (from story to special effects) and if possible would like to go once more to experience it in IMAX. That new digital 3D is really great, too bad they didn't offer The Last Airbender in IMAX, so we had to watch it in regular (again digital) 3D, but my daughter and I liked it anyways. (she will be five next week and we already watched 2 seasons of Avatar - The Last Airbender cartoons)
But what do I know, I think that even Eclipse had some great moments (nice fight between newborns, vampires and wolfs for example )