Celebratory Dinner. Omakase in Denver?

I am taking my fiancé out to celebrate his birthday. We love to eat and would like to try a new spot. He loves sushi and I was hoping for omakase but I am open to anything, my current thoughts are either Koko Ni or Ukiyo. Would love to hear your thoughts. We have done uchi, matsuhisa, sushi den and temaki den. Anything else I am missing?! Any price point. Was also considering the Hop Alley Chef's counter but haven't heard much about it.