I'm agreeing with bmclaughlin807, though nobody, including yourself, knows right now just what kind of riding you will really do, or how much. By now, everybody knows I love my Giant Cypress SX for the riding you describe, though the '06 model came out with a more narrow tire than I would care for. They describe it as a comfort road bike. Some call it a flat bar road bike because of the upright riding position, and the position is something you should consider when choosing a bike.
Some people are like a Slinky ... not really good for anything, but you still can't help but smile when you shove them down the stairs.