I'm a big fan of practical set pieces and models but the CGI usage in the prequels is the deal breaker. Of the three, TPM has the most natural feel to it. I love the OT because of it's natural elements including the models and set pieces. The prequels have very little natural environment to them as a whole. They remind me of digital cartoons and the dialog is sketchy at best from film to film. I believe TPM to be my choice in the like department because it's Liam Neeson delivering them yet they kept him confined.