I really don't like it. We used the whirly jig, when we worked on mine. I can see that this doesn't have lot of features that is built in the whirly jig. Here is some of the features of the whirly jig as compared to the other brands.
http://whirlyjig.com/GTO.htm
The one feature that I liked and I can see that one doesn't have in the photos is being able to turn it ever 9 degrees. We painted the floor pans on my 67 Camaro, and that feature made it easy to work on my car. You can break the whirly jig down to store it. I ended up selling it, when I was done with my car.
Jeff