We just returned from a week at WDW, and DHs backpack is officially dead. We're looking for some suggestions for a good backpack to take. He carries it every day, and it usually includes the video camera, bottles of water, a change of clothes for DS, sunglasses, sunscreen, and other small miscellaneous... He's looking for something durable, comfortable, and big enough to hold what needs to be held (but not huge). Any suggestions??? TIA!