I was inspired to make this thread by a discussion in another thread about how many physical models were used in the prequels and how a lot of the physical stuff were comped in as backgrounds for the actors, like the Kamino interiors and the Geonosian battle arena. Now, in my opinion, that creates a level of realism above that of a CG-created environment, because, even though it's still live actors against blue screen, the background actually exists. If given a choice, though, I would pick life-sized constructed sets with CG enhancements, though. That's assuming I wouldn't be able to have completely real sets to begin with (and you know in this case that's not going to happen). I'm talking, like, build as much real as humanly possible and then add in CG to get otherworldly or completely impractical things in there, like a room with a 150-foot high ceiling. Just build the ground-level real and add in the high parts with CG. That I would prefer over models because the actors have something to interact with. But again, don't let me confuse you with Episode III's "sets" that consisted of a real door or one wall with the rest green or blue screen. So I give you the choices of your favorites (and I know I've made this too wordy to be coherent): blue screen with real models comped in, real sets with minor or somewhat substantial CG enhancements, or, just to be fair, full CG environments?