Vape All Day is typically around 5-10% flavor, Sweet Treat is typically 10-15% and Sticky Sweet is 15-20%. The percentage depends on each particular flavor but that is a general guideline. The three levels are the amount of flavoring added and do not have anything to do with sweetness.
If you like Mangos, than you will have to like this. It is not an overpowering mango taste, but light and refreshing. If you need lots of flavor, order this one sticky sweet. The sweet treat level IMO is just right!