I would strongly suggest taking the Jeep tour around Sedona with Earth Wisdom. Ask for Kevin! We did the 2 hour tour on our 3rd day in the city, and it was probably my favorite part of our trip. Not only was it super informative, but you could tell the tour was authentic. There wasn't a script, and they really make it specific to what you wanted to see/ discuss. Although we did not book a private tour, my brother and I were the only ones on the sunset tour. This was perfect because we were able to ask several questions. Kevin was the best tour guide I've ever had. He really knows his stuff.
If you're in Sedona, definitely take a Jeep tour through this company!