I drink Yerba Mate every morning instead of coffee and have tried most brands. From what I've seen, Mate really needs to be smoked. The Ecco Tea is short on flavor and way to jacked up on the stimulant side giving me headaches. Of all I've tried, the Nativa brand is the best all round. Best for its effect, best tasting, clean, and reasonably priced. I have nothing to do with the company except as a customer but have sampled Mate from all over the world.
I was excited when I found out about the Eco brand and its alleged purity. But I guess there's a reason they've been smoking Mate for generations. The Eco Teas were really a disappointment. I have two bags of the stuff still in my pantry from 2 years ago.