I purchased a few rolls of black and red MH Build PETG a few months ago. I just got my X1 a few weeks ago and was delighted when I just used the the generic PETG preset for the black with good results. However, to my surprise the red was another story. With the same setting, it made a huge mess. I thought it was moisture but drying it made it worse. I had to cut all speeds in half, set the Flow ratio to 1.016 and set Other Layers temp to 255. There is a very slight shade difference from Bambu Red PETG HF but other than that it looked fine with the above settings.
And your question being which one…?