Just compare Selfkey and TheKey.
I trust Selfkey more, TheKey copied the idea of Selfkey that means they don't have creativity to improve the project in the future if other teams don't do it.
But, Chinese knows how to hype any project up, so the price may be higher then SelfKey.
So I'll invest both, one for $$$ one for the future.
The major difference in TheKey is the NEO structure of it. Nothing else. I don't think these teams have different things too much. They're very similar. CVC has the advantage of being first I believe.