I usually drink a regular or decaf coffee. Last week, I decided to get a darker robust blend instead of the usual regular or lighter blend of coffee. I found the darker roast didn't have the acid associated with the other types of coffee. I enjoy the joe, but hate the acid. Now before you say I should/should not go to Starbucks, or should/should not go to a local deli or bagel store, I'd like to read your opinions on coffee, and the acid it contains.