The degree of roast has an effect upon coffee flavor and body. Right now Sheetz is only serving darker roasts such as French and Italian Roasts. While these dark roasts are generally bolder because they have less fiber content and a more sugary flavor, they are also thinner and more watery. The lighter roasts such as Cinnamon Roast and New England Roast have a more complex and stronger flavor from aromatic oils and acids otherwise destroyed by longer roasting times. These light roasts you are currently not serving are the preferred roast for some specialty roasters, as they highlight the coffee's origin characteristics as well as it's complexity, giving you an almost tea-like character. Currently the lightest roast you offer is your Breakfast Blend, but it still tastes like a City Roast to me. If you served a Cinnamon Roast, the self-serve pot it's in should be kept at a lower temperature.