I'm just trying some JC juice now, and I have to say... so far, I like it. I ordered their sampler pack(reduced PG) to give it a try. I usually use Dekang liquids in a KR-808-D1, so I cleaned out a couple old cartos and gave it a shot. I haven't tried all the flavors yet, just the Tenn Cured, Original, Arctic Menthol, and Espresso.
Flavorwise, I wasn't very satisfied with the espresso, the flavor didn't come through very well. The Tenn Cured isn't too bad, I didn't get a dirty ashtray flavor from it. Not a favorite, but not a bad vape. The menthol was a bit different than what I was used to with the Dekang, but pretty good overall. The original... oh my god, the original. I'm madly in love with it. It has a creaminess to it that's fantastic.
All seemed to have similar throat hit, mild but there. Decent vapor production.
Since I use cartos, I haven't run into any atty problems, and I personally didn't see any sediment in my sample bottles.