I recently purchased a Keurig and am loving it. I've finished most of the coffees that came with it and, for environmental and cost issues, will use the My K-Cup most of the time. I prefer coffee to be a dark roast on the strong side and drink it black. The directions with the K-Cup basically say to experiment, but I'm hoping for a little guidance.
What amount of coffee to which cup size do you prefer and why? I have the machine with 5 preset sizes.