I ordered 2 starter packs at first deciding what flavours I would like and if the product actually worked. I'd found that the product gives you more energy that lasts longer than regular energy drinks. Most flavours are indistinguishable which kinda put me off the product. I ordered a couple of tubs from the flavours I did like and I have no buyers regret. The bigest problem I've found with the product is the powder. It doesn't completely mix with the water, so the last couple of sips are the worst and can give you a little bit of a dry mouth.