The problem with Mears is that you NEVER know what situation you will be in.
Our first Disney trip we got lucky. We walked off the plane, our bags were at the carousel, we got straight on a Mears bus, and were the first ones dropped off. 1 hour from plane to check-in. Really easy. We thought Mears was great.
Move forward 3 months. I get off the plane. Wait in line for 30 minutes to get my Mears ticket. Then wait 1 hour outside to be put on a van, then wait 30 minutes for the van to fill, then I'm the last to be dropped off after stopping at 4 resorts! 3 1/2 hours from plane to check-in!! (Just a note, it took 10 hours from the time I left my home till I stepped into a park. I could have made the drive in 11 hours!!)
So Mears can vary from day to day, can also vary from trip to trip and can vary depending on what time of day it is and how crowded the airport is, etc.
Would I still use Mears?? Yes, in certain instances. When I travel by myself and fly, I usually fly in late at night, so will use Mears to get to my resort as I really don't care how long it takes cause I'm not worried about getting to the parks.
In May we're flying in mid-morning with my family, so we're taking the towncar.
Another thing to consider. If ya'll are over 21 and wish to get some alcoholic beverages, such as beer or wine. You will save WAY MORE on a case of beer or a couple of bottles of wine by taking a town car and having a grocery stop.
Carol