I'm very happy with the vapefly holic rda, if you like a fairly tight restricted direct lung.Yeah, thanks. I saw in one of the reviews that he modified the 510 attachment, replaced the bottle with a higher quality one, and sanded the battery contacts lightly. I could easily do that.
My next research project will probably be finding another squonk rda. I only have that Reomizer whose cap fits very loosely.
Any recommendations? I'd probably use a single coil around 0.5 ohm.
The vapefly galaxies mtl rdta is also excellent, high flavor, includes squonk pin, a looser draw than the Holic when you fully open the AFC and side airflow slots on the deck. (Don't worry that the name includes "mtl" - it's excellent rdl) On the galaxies I ended up JB welding the set screws for the side ports in the open position, since that is perfect for me.