Totally MtL tootle puffer here. A semi-odd duck, because I use RDAs; the Achilles is the best tight-draw RDA EVER, and i wish to hell they were still available.
Andria
Special mention, the makers of the Pulse Genny also made a Pulse Dripper:
Was a very tall RDA, but the chamber size was incredibly small. The slot you see cut open in the pic was actually for your posts. Airflow could be configured from all four open down to just one.
Great MTL dripper, very leak resistant and awesome flavor. It did have 2 drawbacks though.
1.) knowing where to position your coil so it doesn't come into contact with the top cap and 2.) knowing how to position the top cap straight so your posts don't come into contact with the center slot.