Would have been better if Sideshow/Hottoys picked this line up. NECA has some cool stuff like the Predators but I think the people who are likely to buy these would have rather spent a bit more to get good versions (assuming these are in the $50 range). Only the hardiest of hardcore Prometheus fans with bother with these I'd imagine.
These head busts are all over the place and the detail is rough. A Hot Toys David with real material would have been mint I reckon (assuming these suits are plastic). Saying that we should be getting a Fassbender Magneto soon. I'll save my cash for that.