I hear the Magma and Veritas are good rda's for flavor...Im liking my kayfun lite + rta with the stock small hole drip tip..not much clouds but intense flavor at around 1.2 ohms and 11 12 watts or so.
Just my personal preference...
Not in any particular order (I also like the plume veil)
Tugboat RDA V2
This is a good starter RDA dripper.
It has a nice sized drip well.
It has adjustable airflow on both both sides for airflow and cloud production.
Yes, a bit pricey but you are going to get good quality here that will last you at least until the next version lol
Yep RDA
The Yep RDA has these 48 air holes at the sides of the barrel for a swirling effect to increase the quality of the vapor production. Basically with this RDA you are going to get maximum vapor production without losing airflow.
Dark Horse RDA
The Dark Horse RDA has 16 preset airflow levels and features square posts to make for some fancy builds. If it is for flavor or clouds this is the RDA for you.
Mutation X RDA V3
Just can't go wrong with this one if flavor is what you are after.
Kayfun/Russian is great for flavor. Another one to consider is the Fogger by Yi Loong. I have a v4, and a couple of the v5 models, they are a stone bitch to get wicked right, but the flavor they deliver it is well worth the effort.