We have used them 2 times and were very happy each time. The first time our flight was 1.5 hours late and our driver was right there waiting for us as we picked up our luggage.
This time flight on time and we were picked up again in one of the luxury van's--there are 6 of us, 2 in carseats--and we got one of the vans with the ent system so the little ones got to watch Lilo & Stitch.