Agreed. There are many subpar snoballs in New Orleans. Hanson's is the only one I go to. I suspect that they cook their own syrup with real sugar, which makes a big difference. My aunt used to have the best sno ball stand ever, in Houma. For you Houma guys, it was the "rainbow sno ball" across the street from Super Suds Carwash. She was meticulous to the point of being silly. My great grandmother cooked the syrup for her. Alas, all good things must come to and end.
As for flavor, there is only one. That is coconut. Sometimes, if I'm feeling decadent, I'll get coconut cream.