This isn’t every Optimus Prime figure, just the Bayformers/Movie Primes. Vote based on: 1. Good Articulation. 2. Good Quality Control. (My Optimus figure recently broke, trying to get something similar to him) If I left out one that might’ve been superb, just comment and tell me.
Articulation and qc in mind .... all ss Optimus should work and so would the evasion leaderclass Prime .
2007 was badly proportionated. ROTF was frustrating to transform. Battle blades was ok, but in the end was only a downsized version of ROTF. Everything else after that were shellformers with fake parts everywhere. (especially the chest, the most important part for Optimus) So SS38.
Pretty sure the Takara MPM solved most of the issues with the initial release. He's easily the best option if that's the case, and especially if robot mode is the more important aspect for you.