Length of the Otto Bock Michelangelo hand unit measured tip of thumb to wrist mount is allegedly about 18,5 cm. This is certainly relevant to know right from the outset. As that it can not be considered for people with longer stumps such as me.
Weight apparently is around 700g without socket. That will probably place it up there with the other myo arms, weight wise.
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In my case, stump end to tip of thumb (of the left hand) is about 17,5 cm. However, no one wears a prosthetic hand flush to the skin - always, some 5-15 mm of parts go in between. In my instance, distance between pin end (if we are to wear silicone liners and a pin lock) and tip of thumb is around 13 cm. This means that a realistic setup with a Michelangelo hand would be too long by 3-6 cm. This means that Otto Bock is selling a really long unit there. That is for people with shorter stumps.
For time being, absolutely no mechanical cable powered bionic hand, or shorter myoelectric hand is in sight. They are not going to build any of these at all.
That means that any other option is the way to go.