Just a quick note, so I don't forget. I've been vaping this juice, for about a week straight now, side by side, in both the Goliath with dual coils at 30 watts and the Subtank Plus with a single coil at the Kbox's 13 watt setting (I think the actual wattage is slightly higher). It's very good in both, but I have to give a slight edge to the Subtank Plus. The flavor is still evolving, but from the Goliath I get more of the Toasted Marshmallow and from the Subtank Plus I get more of the Pineapple, so it's probably just a flavor preference thing rather than a performance thing. The coils are all identical (.8 ohms) and 15 watts on a single coil should be the rough equivalent of 30 watts distributed to the dual coils in the Goliath, in an electrical engineering sense for each coil. I just wanted to quickly document this in case the details become pertinent in future experiments for some reason. Also, it's now obvious to me that adding some Peach to this mix would work really well. I'm still pondering the other options. I have a few weeks to think about it. If he can find the time, I'm absolutely convinced JC could tweak this amateurish starting point into something exceptional.