Judging from my Mugen Vox (the Soundwave repaint), it's crap.
Only looks good in robot mode.
While the joints are nice and firm the most important one feels like it'll snap whenever I move it. The 'microscope' is mounted on a jointed arm that ends in the smallest L-shaped bar and tiniest ball joint. The ball joint is continuously popping out and the L-bar is so thin it's already developing stress marks.