Chuck's Reviews Transformers Rise of the Beasts Smash Changers Optimus Primal
 

While Smash Changers Optimus Primal is a simple toy, I'm very impressed with how it handles the gimmick and I feel it works better than the Optimus Prime toy. Transformation is smooth and you clearly have three stages to the transformation that are easy to activate. One thing I will say the Optimus Prime toy has over Primal is the inclusion of elbows, although the head rotation of Primal does allow for some expression. This is a novelty toy that works well and you can have some fun with.

http://www.youtube.com/watch?v=KwCYi14R58U