This is a great Sushi place to go to but prices a little high. I've never been there during discount price hours and days but I hear you can get a pretty good deal.
The Tazmanian Salmon is great. I even tried the Ama Ebi which was pretty good for pre-frozen shrimp. (the best way to have Ama Ebi is to find a place which has live sweet shrimp)
Selection of cold Sake is great.
People there are interesting. Lots of Asian hookers and white Cougars competing for old Scottsdale douches. Have fun! :)
UPDATE:
The Sutra Sushi web site says Happy Hour is Tuesday through Saturday 4-7. Not many places do Happy Hour on Saturdays....