Thanks gdawg, I've been using it for about 3 weeks now and I like it a lot, but as Fishtec said below, it's not VV. However, it does have a 510 thread, so you can swap atomizers or tanks that are 510 and if you take the thread sleeve (TW calls it a plinth) off, you can even put an eGo-C atomizer and cart on it, which means you can play around with different resistances, but at a fixed voltage, for what it's worth.
From what I hear, TW has a vv on the blackboard - be nice to see what they come up with, esp, if they come up with something that has changeable/rebuildable atomizers.
Have fun with your cobra.
Don't worry I am looks the buissness on my provari but from what I've heard totally wicked have applied for a uk patent on a variable temperature device which I'm not sure how it would work but if it did it would be awesome only downfall is totally wicked would obviously control it and I really hate buying tw products