What is a good brand of kava?

Excuse me, as a practitioner in the field of finance and cryptocurrency, I realize this may not be my primary area of expertise, but I'm curious to learn about a different topic. Could you please enlighten me on the topic of kava? Specifically, I'm wondering what constitutes a good brand of kava. Is there a certain region of origin that's preferred? Are there any specific qualities or characteristics that I should be looking for when purchasing kava? Additionally, is there a reputable source or vendor you would recommend for purchasing quality kava? Your insights would be greatly appreciated.