It appears that you may have damaged the printhead on your Canon in your
quest to save money on ink.
If you want quality to the point where you are willing to buy a print
profiler why would you skimp on ink?
It is also not clear why you are so concerned about fading prints.
Do you think yours are going to be hanging in the Louvre for the next 200
years?
Pantone used to sell pigment inks for use in the Epson 1280: the Pantone
cartridges cost more than the Epsons and voided the warranty on the printer.
Your quest is making you penny wise and dollar foolish?