My girlfriend surprised me with a birthday dinner at Shimogamo. It was one of the best sushi restaurants that I have ever been to (I have been to a lot), and hands down the best I have been to in AZ.
We did as another reviewer recommended and, after giving our server some guidelines, allowed the chef and owner to send us whatever they wanted from the sushi bar and kitchen. All of the sushi was very fresh and some of the dishes were as creative as they were delicious. However, our favorite was the miso cod from the kitchen.
In terms of price, our bill was in the $60 - 70 for two people, with a number of dishes and no alcohol. Yes, this would be expensive for a weekly sushi dinner, but for a special occasion it was actually cheaper than other nice restaurants that we have been to. I recommend this restaurant for a special occasion for any sushi lover and for any occasion for the diner who can both appreciate and afford fine sushi.