Green Mountain Sumatra Reserve is all I have ever drank for a few years now and all of a sudden the taste is not the same. I know they did a NEW FLAVOR, but that is not the issue. The new flavor was a good change, however, past couple orders the coffee is not the same. It is definitely bitter and not as smooth as it has been. Used in 2 different coffee makers, cleaned, scaled, and a brand new coffee maker as well. Maybe our own taste changes but, I've never experienced this. I'm now drinking Starbucks Sumatra!