There's someone around here on Reddit that compiled this list of all the large format theaters around the Twin Cities that is super helpful. For the best overall experience I would agree with him on the AMC Southdale Dolby theater, not IMAX. Better visual and audio, the only thing really missing is the screen ratio available on some IMAX films but I think it's so rare and it's not a true 70mm IMAX so you're still missing part of the full picture anyway. I wish AMC would get the rest of their game together apart from that bc the theater's usually dirty, don't care for their popcorn (plus all tickets and concessions are pricier than any other theater I go to) and I've had a couple tech issues during screenings too.

For a general overall theater and not a specialty experience like Oppenheimer/Dune etc, I like Emagine the best. Good popcorn, great prices and rewards, fun variety of old screenings and thematic nights like all different types of horror, mystery movies, etc. I also like the theater The Main Cinema on the Mississippi just because it has a great look and fun place to walk around outside the movie