>>5848307The best transforming Optimus on the market is MP-10 Convoy, or Masterpiece Optimus Prime from 2012 (they're slightly different with the shades of red and blue, but they're essentially the same). He comes with his trailer, his little blue Roller drone, his Ion Blaster, the orange Energon axe, the Autobot Matrix of Leadership, and a tiny human Spike Witwicky. Appropriately-detailed truck mode, with cartoon-accurate robot mode, MP-10 is a beautiful centerpiece for any G1 collection.
Megatron hasn't gotten a new figure that is of the same quality, unfortunately. The old MP-05 that is also part of the Masterpiece line was a rushed job, and you can really feel it when you have him in hand.