Yeah, I'd be pretty surprised if there were many practical starships from Revenge of the Sith. The Battle of Coruscant sequence is all CGI AFAIK. But TPM is chock full of practical ship and vehicle models. But to be fair, most of my life, I thought the Lucrehulks in orbit over Naboo were CG too. I was blown away when I found out that at least Saak'ak (the command ship the Jedi board and the one Anakin destroys) and the droid landing ships were physical models. But now that I look for it, I can see it. Either way it's undeniably cool.