Park City and Canyons are the only places to go in Utah for park.
Brighton blows, I don't care what anyone says, you will be disappointed.
Park city is the favorite, I personally have never liked their jumps much but that's me. I don't ride a ton of park anyways. I rode canyons last year and liked the shape of the jumps they build more. More like hood or mammoth. I was skiing on a fuqed up knee so i didn't get into the big park but I had fun in the medium one. Next year they are putting a ton more emphasis on park, and I know a lot of people getting passes there, including me. But only time will tell if it will be great really.