I also would caution on just going with the cheapest! I bet this vacation is costing you $1,000's of dollars - I would not take a chance on starting it off on the wrong foot to save $20 - $40 dollars..
We have always preferred to use
FL Tours for our transportation. Andy is a wonderful guy who will see to it you are taken care of.
FL Tours is the official transportation company of the DIS and by using them we are supporting these boards. I know that I would be lost when it comes to my Disney planning without these boards.
Go to
www.fltours.com/reservations.htm and fill out a request, you will see pricing before you ever have to submit the request for a reservation
My recent FL. Tours Review