The tour guide was very good - she was very pleasant and explained things very well.
However, I was disappointed with the gardens and the fact that many statues were covered, but I guess that's how it is in January. I would not recommend Versailles in the winter.
It was very crowded and busy in the theater. I think the show is designed mainly as a tourist attraction, and as such, it was very good. The best things were all the amazing costumes, the lighting, the stage sets, the acrobatic performances, and the pool with the snakes.