Cubify Pro Duo
At the time that I bought the Duo I did not have much of an understanding in how 3D printing worked. I come from a background in extruded plastics and figured the concept of extruding plastic into ever connected rings was fascinating. The Cubex printer was very expensive and it comes with a number of filament cartridges which as far as I can figure only contain about 500 grams of filament. There is a length chip that stores how much filament you use and when it thinks your out it locks the printer. The cartridges are about $100 US and as a result are a secondary income stream for 3D systems. Currently, I have had to roll back the firmware to allow the cartridges to run out and by some strange programming this firmware allows you to continue to run even with empty cartridges. I then just buy Bulk Kilogram spools that last for numbers of parts and can be exchanged without having to bother about buying a new over priced cartridge. I have also modified the printer housing to cut down on drafts and am no longer using the factory software as it promoted part warpage while printing.
Since buying this printer the support company has discontinued offering new parts for it and I expect that I will no longer be able to get parts. But there are some aftermarket parts and suppliers which could serve as additional modification to this printer. One modification i would like to get is a heated print bed so I did not need to buy the glue 3D systems markets as a means of sticking the printing part to the plastic bed
Not all that happy with this printer, is essentially a money pit.