We bought our 2007 Grand Caravan SXT used without 23,000 miles on it. We had been shopping for a minivan for a few months. We wanted a Honda/Toyota, but for the price of a 4 year old Honda/Toyota we were able to few months old Grand Caravan. We are very happy with the van. Tons of cargo space, the kids fit in perfectly and the wife likes driving it. The build quality is lacking, but you can't not expect all that much from an American car company anyway. Some interior parts feel very cheap. The transmission thunks and jumps at low speeds. Gas mileage is 16 city (very hilly) and 27 highway. Not too bad for a truck.
Stow-and-go seating is massive for us. The van is very drivable over long distances. Rear A/C is very nice and powerful.
Better software for the transmission to stop the surging and thunking. Better interior quality. The interior door handle feels like it will fall off in your hand. Bigger brakes would also be nice.