y-sour taste of Dunkin Donuts coffee and I find the stuff made by ""that other chain"" to be akin to re-hydrated cigarette ash.  For many years, we still percolated coffee...with most big-name brands of pre-ground coffee, you needed a percolator to bring out the flavor in it, but again, your tastes may vary.<br /><br />With my Keurig, my favorite coffee was Paul Neumans Extra Bold....because it didn't seem Extra Bold.  Until you buy 80 of them and get tired of the flavor.  Then, my favorites wer