For your regular black/ 2 sugars morning cup, it's definitely Dunkin' Donuts for me - Starbucks in unadulterated form tastes too burnt. I even buy the pound bags of DD for home consumption on the weekends.

Starbucks does do some good beverages that involve some coffee though - love the caramel macchiato and recently enjoyed their new iced banana/coconut frappucino. Although I also like DD's iced Caramel lattes, as well as their fruit smoothee type drinks - so I can go either way with these...just not too often because they are tres fattening!