I figure there are a few main things that effect flavor: The liquid being used. The product being used to vaporize the liquid. The techinic being used on the product to vaporize the liquid. I have a new Chinese eGo-W and got the kit delivered with a bottle of Marlbo - which is supposed to taste like a certain well known tobacco product. The tast was solid but now I have a vanilla flavor from the same company. Occasionally, I get a musty taste when using the vanilla. Sort of like and old garage with the faint odor of engine oil except instead of smelling it I'm tasting it. I don't get that bad taste so long as I don't draw too hard or too often. Also, the liquid I got was really cheap compared to the suggestions I've seen here so I'm definitely going to have to shop around. Mostly though, I'm curious about how much flavor can be effected by factors and what those factors are. Any ideas?