Have to wade in here . Out of all the choices out there . The LavaTube is the worst . I've had two of them , and neither lasted more than three months . Go with the Vamo , or Segelei Zmax . I forget the name , off the top of my head , but they have ( if you join their site ) they are Chinese . Vaporbeast , I think . Anyway they have the SS Vamo , for 29.95 the chrome and black chrome , even cheaper . VV , and VW , uses 3 different battery configs . Seems to be well made . At least that's my .02 cents worth .