What I say on portable storage
If you are backed up with the three estimates, you will be in a better bargaining position with the moving company you choose so you may be able to get your costs down if you tell them you have a lower estimate from another company. This may save you money because the moving company will often times lower their price if you have estimates from other moving companies so that you will find it more attractive to hire them. This is great because if you have your things already packed up, it will save you money. The less things you have to move, the less money it will cost. On the other hand, if you have a lot to move, there may be the need for more moving trucks, which can increase your costs.