I have limited knowledge of the works of Frank Lloyd Wright other than Falling Waters and the Westcott House in Springfield OH (close to my home town of Yellow Springs). My Mom is in town and her friend is a fan of FLW, so I took her to Taliesin West and embarked on the tour.
This was my first experience on the tour. A large portion of it is outdoors - so it is best not to do it in the summer months. The bottle of water given does not last long given the conditions. The tour is $32 for a 90 minute tour through the grounds and some of the buildings. My tour today was actually longer than that. The tour guide, Don, gave an excellent presentation and was very knowledgeable. He provided a lot of detail and answered questions.
The gift shop is nice; maybe a little pricey, but it is Scottsdale. Going in the winter would definitely make it a 5 star event, but July/August makes it tough to completely enjoy and pay attention. If you can catch it in the late evening or fall/winter - it would be a must do!