The piece for Optimus is great in combiner mode. But in vehicle and robot mode, it does not look very good. It's odd and kind of weird bulky. The other problem is the piece for Optimus in combiner mode limits the legs movements. You will be greatly restricted in poses if that is something you want. It really does fill out the combiners back though. So it does look a lot more solid.

The hands and feet make great guns and appendages but the feet use a small ball join and it doesn't always stay up.

Once I opened this up and slapped it on my CW Optimus Prime, I loved it! Only gripe I have is the back of the feet, the parts over the gattling guns doesn't like to stay together. It doesn't affect anything, it is only a minor pet peeve I have with that. Other than that, 10/10!

Perfect effect once again earning the name. Quality: high. Satisfaction: high.