Achilles clone purchased here
Achilles Atomizer Clone / Titanium RDA / Achilles RBA I love this device because I can put 70 drops of e liquid in it which is 3.5 ml (20 drops = 1 ml), lay it on it's side or carry it in my pocket on the motorcycle all day and have zero leaks, nothing, nada. It might hold more than 3.5 ml without leaking but that's all I've tried. (edit, edit, a few minutes ago I rewicked and refilled one more time to confirm I could get 70 drops in my Achilles without leaking and was successful. I laid the set up on it's side with the air hole facing down and there does not appear to be any leaking from the air supply after a few minutes. I believe there could be a leak from the drip tip if it was positioned upside down but that's a risk I can live with.)
It is single coil, the only thing I build, air is not adjustable but doesn't need to be for mouth to lung. I build single 1.6-2.0 ohm coils and run them at 16-20 watts (hard core tootlepuffer). I don't find it to be fussy about coils or wicking. For now I've lost interest in my N minis, Atlantis, egrip, kanger sub mini, and Tugboat v2 dripper clone.
The reasons it doesn't leak. The deck and top cap thread into the barrel and are sealed with O rings. There are no holes in the barrel. Air is supplied by a tube that rises from the center of the deck well above the bottom of the drip well and the chimney extends into the chamber below the top cap.
Unscrewing the barrel from the deck is a pain but only needs to be done when rebuilding. The top cap is easy to unscrew for dripping. I always put in more liquid than the wick can absorb because it won't be leaking out. That keeps the wick and coil super saturated which does nice things for taste and vapor quality.
Titanium is very hard material so take care threading into the 510 connection of any mod. The lighter weight compared to stainless is nice. It is taller than the Tugboat but that is necessary to make it resistant to leaking.
It has the taste and vapor quality of a dripper and the liquid capacity of a small tank.