I went with MS-02ex as my display Prime and boy I'm glad I did. The cost is far less than MP-44 (which is an awesome figure) but this is a solid alternative. Although it does not have all of the extra items as MP-44 it does come with the trailer adapter so you can use MP-10's trailer if you have it. Overall this is a good figure that has diecast and awesome articulation.

I was very excited for this product the front window on Prime's chest broke off with barely any effort. I was excited for this figure but I was disappointed but how unsturdy it is. Really takes away my enjoyment of it.

Obviously it looks amazing. The price beats MP-44 any day of the week and the articulation better. The transformation is fairly straightforward and the truck mode looks fantastic. The painted version takes this mold to the next level. But, unfortunately Magic Square uses a blend of softer plastic and harder plastic. The soft plastic ratchets in the shoulders are susceptible to deformation so try to move the shoulders at the joints in the arms rather than the torso. Also, the assembly with the rear wheels on my figure do not extend far enough to properly peg into the legs for truck mode. It's not bad enough to warrant sending it back for a new one since I'll probably just keep it in robot mode, but QC on this figure could be better.