I have used Xavier for four airport roundtrips from North Scottsdale to Sky Harbor and back.. Half of the times Myron was the driver and the other times it was one of Xavier's other drivers or a contract driver. They have never been late. The drivers have always gone out of their way to help with our luggage and all of the 5 drivers we've met have been extremely courteous. We have never experienced these kinds of problems with Xavier. When we can't reach them on the phone, we send an e-mail with our request and it has always worked out great.