Updating my Tron tank review, like the small size of this tank, one "feature", that I'm enjoying so far is it MAY be somewhat LEAKPROOF. I keep laying it down horizontally, vaping it empty, two things that often cause leaks with my subtank minis. This design seems very good so far in that regard.
However, as I guess can be anticipated, the tiny coils will lose flavor faster then any larger tank with larger coils, those usually have more cotton. I've gotten a decent amount of tank refills but am now noticing a flavor drop off. If you want to test this accurately, use the same juice, same settings, and use two different tanks. My Morph tank with a premade delta2 titanium coil, with about the same amount of tanks run through it, has more flavor the the tiny Tron tank coils, all variables being the same, which makes sense.