The ease at which you can set up your own models within minutes! I have been able to use this program without any training or assistance from support staff - it's that easy!! There are some features missing but nothing major so far as we're using them daily anyway. We've used other DFM programs previously where there was more work involved than what should be required by default; however Apriori has made things very simple here too. Using their API integration allows us access into 3d printing data directly through an app like Shapeways/Makerbot etc., allowing me much greater control over my designs when compared against previous methods.