Don't know if anyone else has used this before, and I am only a sample size of one, but as far as the roll of gold PLA I got, it is nearly as bad as the blue sample PLA that comes with the Robo. I don't know who their supplier is and I hope it is not the same as their PETG (supplied by eSUN). My recommendation is to stay away and don't be lured by the cheap price. Some of the symptoms: Wouldn't stick to the bed no matter how it was prepared. Always seems to be under-extruding. Required higher temperatures than other PLA filaments I have used. No two consecutive prints came out the same. The one good thing was, after tweaking every single setting, and I mean every one, I could print fairly fast. Final settings were about 50 mm/sec at 210°C, 60°C bed, treated with hairspray. I am going back to Hatchbox and eSUN for PLA, although I might give JustPLA a try.