Plastic Differences

Bricklink: Somos Colored Silver

Shapeways: black premium versatile

Shapeways: PA12 (mate with a slight grainy structure)

Bricklink: Somos hand colored in black

Bricklink: Somos pure white

 

not visible here is Shapeways "Smoot fine detailed" (transparent plastic)

 

store.bricklink.com/woodyxfc;

(not public yet but can be visited via woody64)

 

www.shapeways.com/shops/minifigcustomsin3d

 

See also the below given references for materials which show a group of Minifigs with materials I can recommend. (choose according to your pricing and coloring needs).

Please beware at Bricklink I currently offer Somos plain white and let the coloring in your hand. This is the cheapest offer (although having a very smooth surface) but only available in bulk.

Done