Sent an email about purchasing, I will soon be one of the many faithful Underdogs I do believe. I'm thinking I'd like a Bocote, Silver Maple, or Claro Walnut Twig (uber-Twig? difference?). I noticed in Stroh's review the Twigs produce a much lighter ABV than the full-size Dog which sort of confused me (I thought they(Twigs) ran hotter?). I know some say first time buyers shouldn't get a Twig but instead a full-size Dog but sadly I don't think my budget will allow for that; plus I bring my vaporizer to friend's houses sometimes and the added portability seemed like a plus to me since it didn't appear that size negated from performance.