In red: the Pirx result, in standard accuracy settings, in PLA

in blue: the Cube 2 print, in PLA

The Pirx seems to be more accurate, and can apparently do better when setting the accuracy level properly.

HOWEVER, the Pirx seems to print a slightly shrinked version of the model compared to the one from the Cube 2. The red iPhone case is too tight for the phone, the blue isn't. They were both printed out from the very same STL geometry.

the conclusion on this model is that both printers seem to print their own version of the truth from the same model and material. Interesting.