For my purposes I find ABS to be much more rigid than any of the Nylon I have used (6xx, 910, EPA) or PETG. Also the ABS MakerGear sells prints very nicely and is easy to print especially with the enclosure. I have also not been able to stop the nasty warp of larger Nylon parts like I have with ABS. It was actually not much work adding at $15 thermostat and a $30 heater. Enclosure was built to keep the cats out of the mix :-)