I have the non Imax version because I didn't know there was an Imax version shucks. But I may be wrong, there are only 2 scenes about a minute long that are shot in Imax?
The blu ray does an excellent job of putting you in the middle of the action. Explosions are deep, gunshots and rockets are clear. I have an older dlp tv but I did not notice motion artifacts that often, usually I do with fast action movies. Visually stunning! Again, the bass is deep!