This atty is very solid - engineered every bit as well as it's big brother Origen.
* easy to build if you accept the post hole config (wires enter/exit at a non-orthogonal angle relative to the coil axis). Some thicker wire variants (e.g., MM or tiger) might be an issue to install given the angles.
* reduced chamber resulting in very, very good flavour. Effectively, it's 14 mm performance for flavour with larger atty vapor - quite a nice combo.
* afc gives you a lot of options (although I'm more a fan of the cyclops afc style). Single hole option for those not running duals. Wide open, it's suitable for mid-DL
vaping. Closes down nicely for 'pure' MTL'ing.
* runs hot, particularly (not surprisingly) with duals. Clearly, they knew this, given the heat sink that ships with it.
* post grubs can easily fall out when building - the difference between unscrewed enough to clear the post holes and detached is very small. Luckily, my cat found them on the floor the two times I dropped one.
* Works very well with a single coil. Didn't try a center mount, but a .7ohm side mounted 26g coil did everything I could ask of it. I left both afc holes wide open so I could keep more air, and the flavour drop off was not appreciable. I would, however, suggest that the thing really shines with duals.