While the flavor can be inversely proportional to the chamber volume (depending on coil placement) it is also directly proportional to the amount of liquid vaporized per second. Much better more pleasing to me flavor can be achieve on a reduced chamber RDA than a tank. Wicking and air flow constrains of a tank dictate a lower rate of vaporization. It doesn't mean tanks don't have their uses but optimal my preferred vape quality will be compromised.
Fixed that for you. There is different. There is subjective. There is no objective optimal or better.
As long as a wick can keep up - how does it matter how the liquid got to the coil? If a wick can't move liquids from A to B quickly enough
to pull from a tank - it will dry out (on the surface) no matter where the liquid comes from. Wicking ability isn't about distance traveled - it's about keeping the
coil wet.
Boil it down to basics. The variables are a wick and a coil and some way of adding air to the mix. Given
sufficient wicking, you can remove the wicking variable entirely. Then it's all about coil and air flow. These variables vary just as much within one atty category as between the different categories. You can drill any size air hole in pretty much any atty. Then it's down to how air flows over the coil, mixes with air and exits through the drip tip.
An example: The Kayfun Lite has a minuscule chamber smaller than most RDAs. Have you seen the chamber on an In'Ax? Surely these must provide a "better flavor" if you ignore the tank and drip directly onto the coil? If not - would they if you drilled out the air holes?
