Grabbed some eSun PETG and its printing very nicely. I've only got a few prints under its belt, but it seems like a great replacement for most ABS functions. Firm but flexible. ZERO warping. Probably unpaintable... but not my thing anyway, I print baubles in PLA usually. Using 245C and an 80C bed and getting pretty darn translucent to transparent prints (depending on construction). Having my printer in the basement, even in winter, wetness can be an issue. The hydrophobic qualities of PETG are quite appealing in that respect... and the spool they give you with eSun stuff... beautiful. Seems to like speeds a bit slower. Not dramatically so, but using the lines type support, I've had some trouble at "regular" speed. But I've got my machine tuned for speed, so its higher than would otherwise be recommended anyway. Quite the machine the ROBO. Some good tuning and it just works beautifully. I've got all but zero ribbing on my prints now. Even after a good estep tune, still needed to adjust to .92 extrusion modifier. But beautiful.