Just to refresh this thread, I want to suggest Novio 3D printer. This 3D printer is easy to setup and with changeable nozzle extruder. Their Model 106 is upgradeable into Dual nozzle. And if you are also into CNC Milling and Laser engraving, it is amazingly transformable into CNC Lathe, CNC Mill or Laser Engraver machine. You will surely love this 3D printer.