Truly an experience--Not to be missed if you are in Boston
Went to O Ya on a weeknight but still couldn't get a reservation before the last seating (9:30PM). Had the Omakase service and must say it was better than expected (and I had high expectations). The sushi were inventive and flavorful, the presentation were gorgeous and the staff and sushi chefs were friendly. I honestly couldn't recite most of the dishes that I had without referencing the menu, as each dish offered multiple ingredients and different preparation methods (these are not conventional sushi, mind you), but what I can say is that they were some of the best sushi I have ever had anywhere(including NYC, Chicago and LA). One warning though: the place is expensive. Expect to pay Per Se or Masa level prices, but it will be a culinary experience you will remember for a long time.