when you have sushi zo you will think every other sushi place pales in comparison. we used to love irori, but then discovered sushi zo...went back to irori and thought everything was mediocre. spent $100 for 2 people and was kicking myself for not going to zo.
same exact thing happened to me. i used to go to irori regularly. i'm sure the food at irori hasn't changed, what has happened is that I'VE changed as a result of exposure to the sushi zo experience.