I said something a while back about the physics of CGI not convincing the mind that its real. Cant remember my exact words. But, whilst scaled models may not be any more convincing, they dont have the on screen plastic feel that CGI has untill this date, even when they make cartoon real life suits to mix in with basic CGI FX now use. Dont even go there with Tranformers!!! If you are making a case for CGI, maybe compare the directors cut of Battle Royale, compaired to the original release. Just not Tranformers, please!
Says it all when someone using a home PC can surpass the effects of the a major studio create when re-releasing a cult film.
Ady is right to use the models as opposed to computer based FX, as thats how Star Wars was, and simply should be (unless they get the physics of CGI nailed). Thats why the FX of the OT has 'until now' ish, stood the test of time.