Chuck Builds Transformers Age of Extinction Constructbots Grimlock with Dino Rider Optimus
 

Wow, these Dinobot sets are really cool, they have new parts that allow for better and smoother articulation in most joints as well as allow for a smoother transformation. The Dino Riders might just be the sleeper hit of the line since they're really fun and easy to build. Did I mention both kits are reasonably priced? Highly recommended.

Chuck Builds Transformers Age of Extinction Constructbots Grimlock with Dino Rider Optimus Prime - YouTube