experience with the type of food and who you are with. Example- if you are really hungry food gets amazing, if the company and situation is special and the food was good it feels like it was even better and if you never tasted sushi and then had it and loved it, it could blow your mind.
That said I can't pick one:
-A Florentine Filet at Provo Carrabba's encrusted in goat cheese back in 2009 was one of the best steaks I ever had at a restaurant- $30
-Mastro's steakhouse in Palm Springs- Steak was good but the Lobster I got with it was unbelievable- $90
-Bogart's St Louis- Burnt ends- $25
-Lona's Li Eats St Louis- Big Thai Wrap- $13
-Gioia's Deli St Louis- Hot Salami Sandwich- $10