I've used Prestige towncars and they are great! However I was one of the early ones that used DME back in May and had an exellent experience with them. Lots of CMs were at the airport to direct people to the DME counter where check-in took just a few minutes. They then directed me to the correct line for my resort. A bus arrived just as I got in the line, so I was loaded in just a few minutes, and then the bus left in just a few minutes and it wasn't even half full. POP was the first stop, so I was out of the airport and at my hotel faster than if I had used a towncar. Because they knew we were coming POP had LOTS of CMs on duty to check us in, so check-in was quick. When I returned from the parks that evening my bags were waiting in the room for me.
The return trip was just as painless. I dropped my bags at the DME counter that morning, got my boarding pass, then went off to the parks, returning about 3:00pm, just in time to hop on the DME bus to the airport. Again the bus was not even half full, but it went directly to the airport, not stopping at any other resorts. Because on the return trip I had checked my carry on bag, I was able to just walk straight through security to my gate. Breezing through the airport with no luggage to deal with was wonderful. Even though I hadn't seen them since early that morning, my bags were waiting for me when I got home to Dallas that night.
I'm going back in Sept, again in Dec, and again in the spring. With the tip and counting my trip this past May that's well over 500.00 I'm saving, by not using a towncar. When they start charging for it, what I do will depend on how expensive DME is compared to a towncar. But right now DME is quick, free, and I don't have to deal with luggage, so it's a no brainer. The buses are also nice, air conditioned, with lots of TVs and very nice drivers. If it gets to be too expensive, then I'll go back to Prestige.