Might be worth looking at Toyota SIENNA mini-van. I have a 2004, bought new, has 40+k miles on (for a Toyota, that's still Breaking-In miles!). Very comfortable, thrifty, versatile, quiet, and drives like a passenger car. VERY comfortable on long trips - we have taken this on trips -vs- our 2002 Camry. I think the fact that the seats are higher contribute to the long distance comfort. There were a few recalls on this van, but Toyota took care of all of them right away, we even got a free tank of gas from one of them! I would pass on the All-Wheel Drive model (they say that one goes through tires quickly). Ours has the DVD player, but we don't use it at all. Ours also has the running boards, but I would say they are not necessary either, and actually get in the way sometimes.
Good Luck to you on your search!