U-Pak's are awesome, I used one when I renovated my house. You can get a pile of stuff into one of those units.
The drop-off and pick-up of the units saves half the effort of putting things in storage because you're only loading the unit once when they drop it at your house and unloading once they bring it back as opposed to loading in a truck, taking it to the storage unit yourself and unloading there and repeating the process when your stuff comes back.