FWIW
I use Canon MP760 and i6500 at school
together with at home Epson R220 and 1290
I use INKRITE Photoplus inks in all four.
The R220 just never has a blocked nozzle, the 1290 rarely. Colour
reproduction is outstanding using a commercial profile for the R220 and
an Epson one for the 1290
The MP760 also never blocks nor does the i6500. However I have had
colour reproduction issues on both Canons as the profiles need to upgraded.
The cartridges carry around 30% more ink and are around 1/3 the price.
Howard