i guess were spoiled here in ottawa since we have 2 imax theatres now. One is one of the few IMAX\\OMNIMAX combo theatres and another one at a famous players theatre that shows regular movies. The other thing you need to remember that the film for a imax projector is around 70mm instead of your regular 35mm. Also the sound system in those theatres is INSANE. Also for the sharpness comment.
1. Imax projectors are not digital projectors they are film projectors only the sound is digital
2. imax screens are a fine aluminum mesh not a solid screen
3. who cares about pq when it's larger then some office buildings