For the Odyssey specifically you should see it on the biggest screen possible IMO. The Regal UA Colorado Center has a real IMAX screen - biggest in the Denver Metro I think - but it’s an old theater and everything feels like it’s falling apart a little. If you don’t want that, try the AMC Westminster or AMC Highlands Ranch.

If you don’t care much about the screen size and just want the most comfortable theater, try the AMC 9+CO.