My hubby bought one of these and it's quite a nice unit. I was thinking of getting him a 2nd one as a gift but... everywhere I look they are out of stock! is this model discontinued? anyone know whether Kanger will be making more of them, or are they a dead end? [update] looking further afield I found I could buy the kit direct from Kanger in China. and spare coils. but even they have no spare tanks! anyone know of a retailer who has any of the clearomizer tanks for the EVOD Mega? is some other tank compatible?