Dekang is very.... Distinct.
I have heard rave reviews and also (including my personal experience) total disgust.
The benefit I have found to buying US made juice is that I prefer the taste and flavor options available, the majority is made fresh to order, and the PG / VG ratios are fully customizable with most vendors.
There are lots of recommendations for sample packs that can be found using the search bar here on the forum. In the end, it all depends on your personal taste and /or willingness to spend lots of time looking for what suits you best.
I also feel it is worthly of mention that 20 bottles is good and all, but unless you have a few good dripping atties, it will be tough to try them all without it getting expensive for equipment. I blew through 30+ cartos before I got wise and purchased some good bridgeless atties to test flavors. Few things in
vaping are worse than filling a fresh carto with bum liquid an having to toss it. Even then, there are some liquids that leave a "taste" in your equipment unless you do some serious cleaning. That is an entirely different thread.
Is there a flavor in particular you might be interested in? Maybe narrow it down a bit?