There are a few "must try" flavors out there. VooDoo is one of them.
I'm not saying you are going to go all AngiBe over it, but you have to try it. And please, try it again in a few weeks. I can get a different flavor out of it several times in a tankful. And yes, it's worth the cleaning of your tank, before and after.
The other Halo "must try" flavors are TriBeCa, Belgian Cocoa (unless you hate chocolate, and if so, have mercy on you) and Kringles Curse.
The other flavor you must try is Chambord poured over excellent vanilla bean ice cream. This is not an ejuice, but most definitely a must try.