I've tried good coffee. At least that's what people told ne on multiple accasions where I was taken to "the right places" in multiple countries. On two sides of the globe (Brazil and Vietnam if we are talking about producers, not to mention countries that import the beans).
Thing is: no matter where it grows, no matter how they prepare it, fermented or not, different frying, different brewing techniques - all the same to me.
I can tell the difference. Some times small, some times very huge. But still for this difference is like a cat piss from some street cat and a cat with a pedigree.
It may have the ideal temperature, ideal acid levels, zinc amounts or whatever - still tastes like cat piss. The fact that it has a pedigree does not make it better.
Tea is whole different story for me though. But I do accepts that people are fine with whatever they love in their "english breakfast tea" or a nameless teabag.