Love, love, love Katana! It is the only place for sushi in Fountain Hills and it is yummy! It's very casual, I've shown up in yoga pants and a t shirt. They don't carry hard liquor, beer and wine only, so no cocktails. Not a huge deal but notable.
The prices are excellent. I generally get the 3 regular rolls for $12. It always fills me up. The lobster roll, though, will knock your socks off. I could eat that every day.
Service is always good, too. Overall a really solid sushi place in Fountain Hills.