Rental trucks usually mean you do everything yourself so you save money. You also save money on packing. What you don't save on is time. Although, you can set your own schedule. But be sure to reserve your truck well in advance of your moving date.
Common carriers move large loads of well-packed boxes.
Insurance is minimal, but obtainable from other insurancers. UPS, Fedex and the Post Office also truck boxes. Prices, insurance and delivery schedule vary. Weight restrictions may apply. Van lines provide the smoothest ride and the most costly.