If anyone is wanting a new VV&VW device, i can recommend the Ego Vamo/Vamo/Bamboo, all the same thing apart from the names, device will take 18650 batterys or single and stacked 18350's, there are 3 versions, chrome (cheapest) - black chrome (roughly same price) and the stainless steel one (about £10 more)..Its been tested all over the net and has come close to the Vmax and Zmax in terms of the output it can deliver.
Really has shown me that the Lavatubes i was using are so hit and miss, if i set them all to 3.7v, the 2 LT's i have barely produce a whisper, then the Vamo is producing clouds and overall the feel and quality of it is miles ahead, metal buttons etc, clear screen (same size as the Lavatubes)
My only thing i would say, ive had 2 Black Chrome Vamo's and the smoke layer has worn off within a few days, but underneath that its a plain chrome one, so you could possibly buff out of the rest.
Really is a good budget VV-VW device without spending close to £100.
Interesting, I am in the market for a new one as my LT threads are wrecked (I have a piece of paper stuffed in to keep my atty secure!). How much do they go for and where is cheapest?