We just took Airport Bus on Dec 9. It was great! We only needed it from the Fairfield Inn to LAX. It was $16 each. The showed a movie and the bus has a restroom.
We took Airport Bus from Orange County this last week. It was ok. I would pay more for Super Shuttle next time just so we would not have to stop so much. Its a large tour bus with the tvs inside but the maybe it was the driver that was not very friendly and got me down. We waited only 10-15 minutes for the bus when we arrived and it ws only one other family with us. On the way back way more people and way more stops to pick up so plan well and give yourselves enough time to get to the airport.