Super market sushi is what got me into sushi in the first place in the early 2000s. The King Soopers near my school started selling it and I began by just getting salmon nigiri which I loved. Eventually, I branched out and started doing tuna and then a roll or two. Nowadays, I LOVE sushi and try to eat it as often as I can. I've never done gas station sushi , but have had very pleasant experiences with sushi at Whole Foods and Wegmans. Sprouts is also quite good, though Hy-Vee probably has some of the best around here (for comparable super markets).