I make cold-brew coffee sometimes, which also lessens the acidity of coffee (supposedly by 67% or so.) It is especially good if you ever make iced/frozen coffee drinks, because you can adjust the concentrate ratio and get a much richer taste as cold coffees go. I also like the Aeropress, but my wife prefers the cold-brew method so we probably do that more often. We're trying to cut down on both, though. I recently read a couple of studies that say that unfiltered coffee increased your risk of heart disease, because the diterpenes raise your serum concentrations of cholesterol, triacylglycerols, and alanine aminotransferase.