I have an 120mm-s and a 178mc. The 178mc color camera does not guide as well as the monichrome in my experience. The color camera isn’t as sensitive. I see the difference clearly when guiding...... but that’s just my experince. My Asiair will guide w the color, but monochrome was better.
I should add a different software guide system I tried would not work w the color camera at all, tho it was supported.