I couldn't tell you what region a coffee might be from, but I could tell you if it was high altitude, indonesian or african or south american maybe.
I roast coffee, that's how much I love it. Right now I just got in Organic CoOp PROISCH, from Chiapas Mexico. This is a great full bodied cup, very sweet in the middle with slight nutty character at the start.
My favorites do tend to be African because they have distinct flavor profiles, I have Tanzania Hope Pea Berry and I really love that spice in the cup. One might ask why those distinct flavor profiles do not typically garner all those awards in the coffee industry. It isn't about being brutish and distinct, but more refinement and complexity along with clean even cup quality.
I could go on, but the short is that South American coffees tend to be tops because of how clean the cup is, and how refined the flavor profile is. Sadly, to me, this means it's kind of boring. But I'm trying to refine my palate and consider that my area of improvement. Really picking up on those very light floral, citrus and nutty characters in the cup.
As for Kopi Luwak, Kona and Blue Mountain. Supply and demand is what drives the price of those up, not the quality of the cup. Don't get me wrong, I haven't tried Kopi Luwak, they are good cups of coffee. They just seem to have a kind of premium put on them regardless of how good they actually are. This gives a false expectation and impression the majority of the time. Like I said, they are great coffees, I'm not trying to knock them. That's just a kind of stand back and look at the whole picture kind of things...