I've only tried one Dekang/China-made juice, and that's this menthol stuff they sell at e-cig.com...I dunno if it's actually Dekang or not, but I'm almost certain that's what it is. I actually really like the taste of it, it vapes *very well* at 5V, almost too strong at times.
Other than that, the only juice I use currently is VaporBomb. I've tried a couple others' concoctions, and while they're quite good stuff, I can't get away from VaporBomb's flavors. I've heard DAT's Vaper produces some pretty good stuff too, however I have yet to try it. Tasty Vapor makes really yummy stuff, too!
Next three vendors I wanna try:
-DAT's Vaper
-Ms. T's Bakery
-Halo (I'm not big into the tobacco flavors, but everyone else likes them, so why not)
The only real difference I've noticed in the China juice vs. the American-mixed stuff is the vapor output: the China juice is 100% PG, yet puts out as much, if not more vapor than some of the 80%PG/20%VG American stuff I've tried. Definitely not as good as 50/50 mixes, though. The throat hit on the China juice is insane, in my opinion...I can sit and vape my China juice for about 15 minutes and get one helluva buzz, yet I gotta chain-vape my American juice in the same strength before I get to that "level point". Lesson learned: order stronger dosage when ordering American juice.