David was excellent. He was attentive and kind. He made sure we got where we needed to go. He was a safe diver. He was a joy to spend time with and to get to know. I would highly recommend this tour, especially with David Crane!
We were a group of 6 women. Robert was an excellent driver as well as tour guide. He was very accommodating. My friends were impressed with all the beautiful scenery as well as Robert's knowledge of Arizona.