Well, you can also do the Calibrations “order” of Matirial on Bambustudio and so it will by stored to the matirial on the slicer and not on the Printer. However I got by my first PETG print ever also some problems and if you see whats mater it`s also no issue anymore on other printers.
This try to point out under 1. “Prototypes (including material tests)” to fill up some expiriances and if you have it, the P1P is the littel more interesting choice. If not and you still need testing and support X1C… So no recomendation fits all 
And here a recomendation to someone how goes under troubles with PETG…