The PT really opened my eyes to how much I loved the sets from the OT. The PT on first glance is really nice to look at, only because places like Kamino, Mustafar, Geonosis are all new looking, so something different is always neat to look at the first time around.

Upon further inspection, the films just don't look real at all. It honestly looks like one big animated film with real actors dubbed in. Now the one thing about real sets, is you are constrained on what you can do, and that is what is so appealing to CG, is that you can do almost anything.

But as I compare the look of the OT to the PT, the PT just doesn't feel real. I can't explain it, but CG movies are just too neat, and just don't have that realistic look to it.

As for models from the OT, don't even get me started on that. The OT space battles are so much more believable. The PT space battles look even more like an animated movie. Just check out the ROTS opening battle compared to the ANH or ROTJ battle, the CG is so obvious.