It can be tough picturing all your contents boxed up and stacked in a storage unit. We understand and can help you decide.To help save you money, you might decide to go for a smaller one and see what happens. But who wants to move everything to a larger unit if you guessed wrong can't get it all in? Don't worry -- keep that unit and add a second one. We'll just charge you the difference, as though you rented the larger one in the first place. Who knows -- it might be better that way anyway, so you can organize your contents more easily.