Let me begin by saying I struggled to assign an overall rating to our experience. There were a number of issues with our Canyon X tour, however, when I discussed our concerns with Overland, they were very apologetic, and quick to offer a partial refund. It seems that our experience was an anomaly. I'd encourage you to read the whole review and judge for yourself.
Our guide was nearly 45 minutes late, which did not get things off on a great foot. The guide had been under the impression that our tour started at 10 a.m. instead of 8 a.m. The tour had indeed originally been scheduled for 10, but was changed to 8 the week prior at Overland's request. This change apparently did not get passed along to our guide.
I had been hoping to learn a bit about the geology, history, and culture of the area from our guide, but unfortunately I learned very little. She spent the first part of the drive to the Canyon discussing the scheduling mishap and most of the rest of it talking about the day's news. In the canyon we generally walked in silence. Her responses to my questions about the canyon itself were terse.
I also had some safety concerns. Our guide talked on the cellphone while driving (I was later assured that this is against Overland's policy) and asked for our opinion about whether we should proceed with the tour given the potential for rain and flash floods that day. We are not from the area and have zero experience in assessing flash flood danger, so that was disconcerting.
After our tour, I contacted Overland to express my concerns with the tour. Brenda responded promptly and professionally, and offered to refund half the cost of our tour. The refund showed up on my credit card within a day, but was only for $105 instead of $120 (our total cost for two people was $240).
Canyon X itself was beautiful, especially the slot canyon portion that you go through near the beginning of the tour. The solitude was wonderful... the only other group in the canyon was the Overland photography tour, for a total of maybe 10 people. There was no issue with taking the time necessary to get a good photograph. As noted on Overland's website, the slot canyon portion is relatively short and then it opens up into a much wider canyon. The wider portion is still very scenic, but cannot match the "wow" factor of the slot canyon. If you're looking for a longer slot canyon hike, one of their other tours may suit you better.
A closing thought: The only other person on our tour was a gentleman who had taken a tour with Overland the previous day. He had been so impressed with his guide the day before, that he booked the Canyon X tour as well. He seemed equally frustrated with the issues on our tour, but hearing him talk about his positive experience the day before further convinced me that our experience was an anomaly.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.