I got a couple of these about a week ago. I had held off from getting the Vivi Nova
tanks because they use a polycarbonate tubing, which I try to avoid because of
juice issues potentially reacting with the plastic. These tanks, which GotVapes calls the
smoktek Titan clearomizer tank, use a polypropylene tube.
I was mildly impressed with the threading used with these tanks. There is actually a metal ring encircling the inner diameter of the tubing with threading to match up with the endcaps threads...impressive machining for a inexpensive tank like these. The metal used for the end caps is a dull looking stainless; a more polished look would look better on most devices in my opinion. Diameter is similar to a Provari or a BB.
Functionally, the tanks work well so far. No leaks, no flooding or dry hits. Easy to fill or clean, just unscrew the top for access. I've not needed to tinker with the atty head or the wicks. Vapor and flavor seems where it should be.
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