I'm a fan of the Doge(s), though other people claim they aren't particularly flavorful. It's how you build it/how much you open or close the airflow more than anything.
The Kennedy RDA is suh-weeeeeeet though. Gotta pick me up one of those. Definitely flavor city.
PS: I vape mostly unflavored/diluted flavoring anyway so what would I know.
My flavor is usually diluted. Oddly enough though.. out of all my atomizers, the Protank II has given me more flavor per vapor than any other atomizer. Using the exact same juice, the protank II will tickle my nose on exhale... Same juice in my subtank, and no tickle, and just about equal for vapor. I'm sure I'm getting much less nic with the protank, but the flavor is actually just as strong or stronger than a subtank.
Airflow has a LOT to do with flavor like you said. Protank II is mouth to lung, Subtank is direct lung. But even on it's lowest airflow setting, the subtank can't match the flavor density of the protank. This is true with all my RBAs.