Ive tried a lot of the Dekang flavors and with maybe one or two exceptions, most taste pretty good to me.
Just make sure you're getting the original factory-bottled Dekang. Some vendors buy concentrate & mix up their own juice, so their's may taste different.
If you're worried about quality, from what i've researched, the dekang factory is very clean & adheres to some of the highest standards in the e-liquid market.
Same with Hangsen.