I'm looking for a good unregulated box mod. I like to sub ohm down to .1 most of the time because I enjoy building unique coils. Most of the boxes I've found won't allow anything below .6 or .8ohm and the unregulated mods I've found have been questionable. I would like to be able to use two 18650 or two 26650 batteries in it but I can live without. Any advice would be great!