I think the original models of the trilogy have aged really well. I can still watch the Star Destroyer chasing the Tantive IV at the very beginning of Star Wars and still be in complete disbelief. When Vader's Imperial Shuttle approaches the Death Star II in Jedi, I am completely in that world. REAL models hold up better than CG models. I'm not saying that every special effect in the OT was completely flawless (eg. the rancor and the translucent snowspeeder cockpit*). But in the PT, I'll more likely be thinking, "Oh, look at that nice-looking computer ship." CG is a very very important tool in today's film making. I will not deny that. But in moderation! Don't drown it in computer animation. I feel that it should only be used when it is impossible or infeasible to accomplish a special effect any other way. And that's not the way that Lucas used it in the prequels. So using a CG Yoda, Adam, when a perfectly good puppet Yoda already exists is just completely inane.

*I still prefer the rancor with the matte lines and the translucent cockpit to the cleaned-up versions. Has anybody with pan-and-scan (forgive me, I was young and didn't know better at the time!) ever noticed that, in the original version, the edge of the cockpit isn't even in the frame? But in the special edition, they made sure to pan the camera a wee bit farther to the left just to make sure you noticed that they fixed that sucker!!!