Three of my friends have 2000 to 2002 Tundras with the 4.7 engine,and all have been extremely reliable despite our harsh climate.The biggest maintenance cost is changing the timing belt.The only weakness of the 4.7 is that it doesn't get great fuel economy considering the size of the engine and the weight of the truck.The 5.7 get's the same fuel mileage while producing 110 hp more and hauling around a heavier truck.
