Singer 320 (the free-arm version of the 319). I don't think they were made in (or imported to) the U.S., so I guess I'm including a color-coordinated 110V motor with that request.
Pfaff 138 industrial. I'm 6'3" so most domestic machines (and cabinets) feel slightly out of scale to me. This Pfaff has a good reputation and a roomy throat space.
Are attachments allowed? If so, Singer Walking Foot attachment #160741 at a sensible price. I don't know if I want it to keep; I just would like to see what all the fuss is about.