Don't know how experienced you are with Dis trips and the transport options but we used Mears 2x's and never again. We were 1 of the last stop so we were boarded in the back of the shuttle with lugguga piled on top of us!! They put the 1st stops in the front of the bus...makes sense I know but with all the stops to the properties outside of Disney then to ours it took FOREVER..like an hour or so!! Towncars are a great option. YOu hop off the plane, grab your bags..or the driver that met you at the gate grabs them for you and off to you own roomy car. With MEars you have to wait and wait under the exhaust filled canopy while they "organize" the order of everything.
There is Tiffany Town Car that we use evrytime and Florida Tours (?) that I hear great things about..
Strongly discourage Mears
Hope this helps