Yeah, I heard that up to four cups a day was good for you, anything beyond that is damaging.
Coffee always has, and always will be black for me. Starbucks is over-priced. Gas stations actually have real good quality coffee, better than the cheap, low quality Robust stuff McDonalds prides themselves on. (Robust is the lowest quality, and most bitter. Sorry, I know a fair amount about coffee). Not sure how far it gets out, but Berres Brothers makes the best beans.