>>7001229Depending on how much you're willing to pay and if you're looking for something to put on the shelf or for a desk.
Right now there's two Masterpiece Optimus Primes, the first one being expensive as hell due to being an old legacy favorite while the second version is somewhat "cheaper" in the market due to having constant rereleases. Both toys have their pros and cons, with MP01/Version 1 having more posability and MP10/Version 2 having a cleaner look for both vehicle and robot modes. Version 3 has yet to be released and is more focused on replicating the Sunbow model from the early cartoon. Cheaper Optimus like deluxe and voyager versions of G1 also exists. The most recent being the POTP and TR Optimus, each having pros and cons.