Living in China I'm limited to Hangsen and Dekang, unless I want to pay way too much for imported liquids.
What I'd say is that Hangsen really is ok, but be careful, as Hangsen license other companies to produce their liquid. Although the Hangsen name usually remains the same, the packaging does not. Liquid actually made by Hangsen is ok. The PG/VG ratio varies from flavor to flavor, but always high on the PG side. The Hangsen liquid made by companies other than Hangsen is to be bought at your own risk. Sometimes it's ok, sometimes it's not and no amount of steeping can change that.
Hangsen is good for an all round cheap liquid, but it's not the best in the world by far. Playing around with ohms, coils and wicks can improve the flavor, but that's true of all liquids.
For most, Hangsen will be passable. For me, it's usually all I have and I've grown to be happy with it. In fact, sometimes very happy.
I'm curious, which ones do you like?