I’m likely the odd one out here, but I recently went to watch The Odyssey in both Dolby Cinema and IMAX 70mm formats and found that I enjoyed Dolby Cinema quite a bit more. I think I see the appeal of IMAX 70mm, but the Dolby Cinema picture quality and seat comfort (including reclining seat back with footrests) are just too compelling for me. I may have also had unrealistic expectations for 70mm given how high demand tickets are and how folks and Nolan have really lauded IMAX. In terms of sound, I don’t have a strong preference there.
I suspect “full immersion” is the draw for 70mm, but I love sitting one row up from the ground level for Dolby Cinema and find that incredibly immersive and comfortable.
No shade on those who prefer 70mm or other formats, and this is just one person’s opinion.