Hmmm, that adds a new candidate to the mix. I've had my eye on this one for a while now:
BFB-3000 Plus 3D printer | Bits From Bytes
It's ~$3,000 and can print in one to three colors/material (cost does up the more spools you add). It's also got a very large (for the price) build table. I just haven't seen too many reviews of it.
My sister-in-law's boyfriend bought one of these 3D printers. He is a mechanical and engineer and he designed a steering mechanism for skateboards using this printer and he successfully printed the part and is now awaiting his patent for it. It uses a filament type medium that is melted and squeezed down on the plate. He said the part he made took about 4 hours to fabricate.
That's good to know. Do you know if he has any pictures he'd be willing to share? I'd love to see the detailing/smoothness of the part.