I watched the video...
Seriously--how much better can it really be? Every new RBA has been called by someone a kayfun killer, including the Lemo. I mean, it's a coil, a wick and a tank... I know experienced vapers who are going back to dripping on 510 and 306 atties and claim it's just as good as anything else.
The more things change...
I'm just looking for a smallish RBA--well designed and user friendly. I don't sub-ohm, I don't want anything with a huge airflow. I'm not into exotic coil builds. Basically, I want a kayfun-style RBA that will give me a bit more airflow options than the Kayfun does and no leaks, no whistling, maybe top-filled.
Why can't somebody make one?
I was just about to suggest looking at the calix rba by leo, but then you said a kayfun style deck...