So I'm decided what G pen to buy myself for Christmas. When I went to the site they had a variety of options to choose from and I'm pretty lost as to which one to get bc I'm confused about what exactly the boxes come with. I'm looking to spend up to $100 but will that get me something that I can just hook right up as soon as I get it pop in some wax and start hitting? This is what appeals to me most. But does it even come with the g pen? http://www.grencoscience.com/products/g-box Are two tanks needed? http://www.grencoscience.com/products/g-box-2-original-g-tanks G stache what on earth separates this from normal g pens. http://www.grencoscience.com/products/g-stache-tm