In layman's terms, while using my Canon printer, and I happen to be printing DVD labels whose paper is generally not concerned with color accuracy, I get my best prints using Let Printer Manage Color setting in Qimage.
This auto sets the QU profile of qimage/prgb.icm in place in Qimage.
It also requires that you set the driver's color management setting from NONE (no color mamagement) to AUTO; yes color management,
Finishing that job, I change QU back to printing with a color profile, and QU will now automatically reset back to Color Management OFF or NONE.
That is for very old people like me who forget to put it back where it belongs.

If not too many complaints, Epson will be next.

Fred