Having never been a huge fan of sushi, I recently had my first meal at a high end sushi place and the difference was massive. For the first time ever I really &#x27;got&#x27; sushi.  That being said the difference was 90% in the fish. Sure they probably used higher quality fish, but they also used different fish and experimented with different cuts of fish than the low-to-midend places and that made a massive difference.