If you want the best of the best dark roast coffee see if your Starbucks has a Clover Brewer and get an Italian or French Roast made with the Clover. It is a $10,000 coffee making machine that is a fancy french press and makes probably the best cup of coffee in America IMHO. Cost about a $1 extra and takes a few minutes but made fresh anytime of day. They also have some dark roasts available that are only offered as Clover Brews. Only find them at limited locations though, I think there are 3 or 4 of them in Austin.