So my next step is a rba. I like the aqua as I like dual coils, but I also am up in the air about a kayfun 3.1. I know you can build a dual coil with the kayfun but it's marketed for single coil. But after looking at both I imagine they'll look goofy on my mvp. Anyone have a rba on a mvp? Looking for a bottom coil rba with at least the option to go dual if I wanted. Need a tank as I'm on the go and can't always drip.