I had it installed for less then two hours playing with it. I could not agree more with the comments on this thread. The way it renders, the new interface, the enhancements on the vertex modeler, the tree thing. If you have not gotten this upgrade do not hesitate. I am running it on a dual G-4 with 867 dual processors and it is a joy to work with. It is such a dramatic improvement over 2.0 that I would have gladly payed more money for it. I agree with nomuse, although it might be premature for me to say this, but it doesn't feel at al like Beta software. I made a small animation just to try it out and I am extremely satisfied with the results.
Thanks Eovia!