Got my Kayfun Lite + a couple of days ago. I went with my standard build for everything: 5 wraps of 28g Nichrome wrapped around 2mm silica - doubled. I want to experiment with some more interesting builds soon but I thought I'd start with "old reliable".
I had a few issues out of the gate . . .I overtightened the airflow causing minor flooding and leaking. I then unscrewed the top, not realizing it was also loosening the chimney at the same time and had severe leaking.
Within a few minutes, though, I got it working right and it's been working great ever since. Compared to all my other devices, this one is the best by far. The best flavor, easiest to build and as much or more vapor than any of my other rebuildables.
I rarley spend big money on vaping gear and $100 bucks seemed like an awful lot. I did a lot of research, though, and really felt like it might be worth it - because I love rebuildables but I find them mostly a pain to work with and leaky. The Kayfun Lite + has delivered fully . . .easy to rebuild, performs great, doesn't leak, looks cool, holds a ton of juice . .what more could I want?