I saw the IMAX print and it is awesome! It is the future of cinema to see movies in this format. I'm going to see Tranformers one last time and get ready to gear up for Transformers 2. I added two minutes of stuff for IMAX that will never make into any DVD's. There will never be an extended edition.
About the DVD. I like the two disc set. It has all the extras that the others don't have. It is the definitive edition of Transformers. It really breaks down how we made the movie.
Anyway hope you like the IMAX print!