Kayfun lite 2019 since the day it was released till now. Upgraded with aerokon airflow pin, then got the kayfun lite plus as a spare.
Since 2019 till now I've only had to change 1 of the post screws. Other than that its still my number 1 atty, and my only atty.
I am considering the Kayfun X though. Same concept/deck as the KFL 2019 but with a few added features such as top fill and juice flow control.