This one: http://ift.tt/28LuNek . It took me about 8 hours to assemble and as soon as I tested it with a first print, the power supply blew up.The ebay seller gave me a partial refund for the power supply I ordered a replacement off ebay (yay prime) and tried again surprisingly the printer prints quite well. I printed a thingiverse test print and then I printed a power supply wire cover, both came out quite well. I am quite happy with this printer, yes I realize it is very cheap, but It gives me a basis that I can slowly tweak and improve, and honestly I am getting prints as good as I get off the more expensive printers at my local hackerlab. http://ift.tt/28LN0XI