I've owned several FDM printers including PrintrBot, Ultimaker and MakerBot. This printer blows them away with its print quality and consistency and is made of Open Source components.
Don't be fooled by its low price. The MakerBot I had cost 10X more but was made with cheap injection moulded parts that broke easily.
The Ultimaker had an extruder that jammed all the time and the PrintrBot used a non standard print head that quite often leaked and was expensive to replace.
Do yourself a favour. Buy this printer and take some time to learn how it works and how to replace parts. You will find that FDM printers are really all the same and there is no point in buying some company's proprietary technology.