America's Test Kitchen just did a testing on this. The top of the list was Peet's coffee. Alot of coffee makers add beans that are still green to the bag which causes it to be bitter tasting, up to 14 which I guess is a big deal. Peet's only had one in their bag. I don't drink it because I like mellow coffee, I normally use Folgers breakfast blend or one that says mild or med roast. I have the gold metal basket in mine but put a paper filter in it so that I don't get the sediment at the bottom of the cup that you get from the metal basket. This way it double filters it. The paper goes in first then the metal goes in it, this way I can use the paper a couple of times if I make more than a pot in one day.