I chose them based on their price and the recommendation of a friend. It pays to shop on the internet....a similar tour was selling for $100 more at the Cosmopolitan concierge! I wanted something easy for a group of friends of mine visiting who wanted to see the Grand Canyon. The guy was really nice on the phone and answered all my questions. They sent an email confirmation right after we booked and then a couple more reminder emails. The bus was nice with wood floors and TV's. Driver was on time picking us up. He was pretty funny and kept us entertained. Good experience overall.