At CES 2014, I ran into the DWS Labs team who gave me an overview of their XFAB SLA printer. It can print in an exciting range of 9 different materials: standard acrylate amber, ABS-like grey, ABS-like white, polypropylene-like, rigid opaque grey, transparent, ceramic nano-filled light blue, rubber-like black and rubber-like transparent.

With a possible minimum layer thickness of 10 microns, the surface finish on the parts shown at CES was impressive.  The XFab retails for $5,000, but there is a lower cost consumer model on the way for around $2,500.