We used Mears on our last trip in 1999, and it was ok, but I didn't like sharing the van with so many other people and making so many stops before getting to our resort. I wanted to get to the parks! The van also smelled from someone's strong perfume/cologne and almost made me sick to my stomach.
This trip (June 2001) we used Tiffany Town Car and had a wonderful experience. The driver was waiting at baggage claim, helped us with the bags, the car was clean, not smelly, we went straight to our resort. Heading back to the airport, they showed up right when they said they would. I'll definitely use Tiffany Town Car again!
P.S.---another plus for TTC---when our driver picked us up at the airport, we were asking about the weather forecast. He said that they had thunderstorms the whole day before, and the folks he was picking up at the airport, their flight was 1 hour late. Then it took another 2-1/2 hours until their luggage arrived! What amazed me was the TTC driver waited the whole time with these people!! I certainly hope they gave him a big tip.