I got a couple of the Pyrex Vivi Nova V-Fates from SweetVapes. I have two of these in silver and I like them, except for the dual coil wicks that come with them do not taste good. It's not the fault of this exact tank though, I don't like silica wicks in any tank. Silica wicks give me a dry sore throat.
I made a modification for all my Vivi Nova tanks. I use the single coil head. I drill a 1/8 inch hole at the very bottom of the wick slot on each side. When I recoil it, I wrap a coil with the same drill bit, I line the coil up so you can see through the hole, center of coil, and through other hole. I then thread organic cotton wick through it and let it drape down on both sides. This allows me a quick wick change without recoiling all the time. This way you can pull out old wick, dry burn clean the coil, and insert new wick for a fresh start. It seems I like all the dark juices that clog up wicks and this is a great solution to that!
I've tried silica, eko-wool, ceramic and stainless steel wicks. Stainless steel is okay, but takes a lot of time and you have to torch it so it doesn't short.
The drill hole mod and organic cotton wick produces a lot of vapor and best flavor yet for all my Vivi Nova tanks. This method makes the Vivi Nova tank come really close to being as good as my Kayfun 3.1 as well.
--Steve