So far my top two favorite flavors:
#1Frost Fire (to me it tastes/smells like big red chewing gum) from Ivape.net
#2 Ecto Chill (to me it tastes like ecto cooler juice box with menthol) from Juicy Vapors.
(I used to smoke menthol cigerettes before going to e-cigerettes so I'm partial to mentholated eliquid)
I also love the concentrated menthol drops from juicy vapors, 1-3 drops in any flavor and it adds the perfect umph of menthol.