>>6434216(tl;dr, get it if you like the appearance)
Rally is great, only problems I had with it where the with the guns not wanting to separate, making one of them break because the peg was chromed, but that was solved with an email to a customer service rep.
The figure does have quite a bit of diecast, namely in the spine, thighs, and forearms. (along with a few decorative panels)
The articulation below the swiveling waist is great, however, because of how the shoulders are assembled, they tend to look a bit weird in anything but a neutral position. Aside from that, the head is on a hinge and the neck can swivel, the knees (that are ratchets) and elbows can both reach 90 degrees. and while the fingers can all hinge individually, the index fingers have an extra hinge at the first knuckle, allowing the figure to more accurately grip certain weapons. The thumb is also on a ball joint.
The vehicle mode very aesthetically pleasing, mainly due to all the unique decals applied along the sides of the rally car itself.
While transforming the figure is quite a pain, (shitty instruction manual, youtube video recommended) the end result is a figure that looks great, is fun to pose, and is certainly worthy of the price I paid for mine while at TFcon.
Oh, and one last thing. It has been reported that the figure might have loose ankles out of the box, and while my copy does have a loose ankle, it has not hindered my enjoyment in any way.
If you would like any reference photos or want any more information on the figure, feel free to ask. I have more than enough time on my hands.