I love to drink coffee black, especially if it's a dark roast. Double Diamond was exactly what I was looking for. It's very bold and tasty but it isn't bitter.
I've been buying through Keurig, caffeinated dark, extra bold coffee for roughly 3 years and love it. They have a large variety as well as quantity selection that you can choose from all in one location and have your order shipped to your door without the hassle of shopping for your favorite coffee! :)