I've been to Mido twice now trying the All-you-can-eat sushi option as well as the normal a la carte offerings. After trying the AYCE option I think its a decent but pricey option. For $28 including tip you get wave after wave of a wide variety of sushi/nigiri/sashimi options they have as well as hot tea. If you choose this route I recommend the Mido roll and the Dragon rolls as they were ones that stood out from the generic other rolls we tried. Spicy jalapeno yellowtail was disappointing as the yellowtail was a mix of mayo, sriracha, and lackluster fish. The nigiri here was disappointing as well as the ones here are an example of quantity over quality. Do note that you won't be getting some of the better stuff they have when you order from the AYCE model.
A la carte I had a better experience as I chose the soba sushi dinner combo. The spicy tuna donburi and soba that I received for around $18 was massive as well as tasty with each entree coming out in one of those giant bowls they use for Pho or Bibimbap. My dining compatriots got the ramen and sushi/unagi and their bowls were just as big. (Though looking at the online menu I can't seem to find this amazing combo of food)
Sorta funny that some previous reviewers said this place is an all-japanese restaurant..... Place is full Korean owned lol (Which is why you'll see more fusion rolls and not some of the Japanese staples like the negiyama roll)
So yeah decent food that will fill you up and one of the few places in Phoenix that will do AYCE sushi.