We have used both the
Disneyland Express and the Super Shuttle vans. We will never use the bus again. We had to wait quite a while for it to show up, it was crowded and LOUD, the toilet was broken, and it must have stopped at about 15 different hotels before it stopped at ours.
The shuttles were right there and they put us on one to Disneyland immediately. Never had we had drop offs at more than 1 or 2 hotels before ours with the vans.