Well, since I went with a town car service my last two trips, I will never go back to group buses or shuttles!
Magical Express sounds nice, but to me, nothing beats being met in baggage and hopping right into our own car and heading straight to Disney.
I love not waiting for anyone else, I love the grocery stop and I love going to straight to my hotel without any other stops (at other hotels) and having my baggage with me.
It's worth every penny to me and then some.