it had the juice control and more air
Now I remember why I passed on the K4. I like less air and sooooo many parts to the thing.
Ease of fill and flavor. I personally don't mind refilling more often. They make it simple.
After viewing that video, it is VERY simple to refill. Might make it worth it. If it was like the KFL+ where you had to take the thing off the pv and then remove the screw, then Definitely Not a purchase for me.
Hmmmmm things to think about. You know me, I will research and wait till it has been out for a LONG time before getting on the band wagon