I liked it at first, and it definitely helped me when I first started, since you need lots of wick with rayon, and with cotton I always got too much. But, I finally learned to use cotton pretty well; the Shiseido pads are *perfect* for me, because I need long wicks in the Achilles, and the long side of the Shiseido pads, with the weave, is perfect; I only cut off about 3/4 inch total, for a perfect length wick. With KGD, the length was iffy, for the Achilles.
What happened was the Smok RSBT or whatever the hell it was called; an RTA, stainless and glass, but the arrangement of the base was no improvement over BCCs, and after getting used to a Kayfun, that was a rude shock. With my thin juice, at first it just leaked like a sieve. So I tried more wick.... that was when i got the burnt rayon hit, and god GAD, it nearly cured me vaping completely! Just ungodly awful. I went straight back to Kayfuns and cotton. Eventually I PIFed that tank to USMCotaku, who seemed to really like it.
Andria