I use the cartridge for CANON PIXMA MP 550. Compared with my previous MFP Brother and its cartridges, the cartridge exchange is very clean. While I from time to time had black ink stains on his hands in the cartridges of Brother, running with the cartridges of Canon made no ink. In addition, the ink does not smear when printing and ensures a great print results.
The only criticism is that the cartridge is not very productive and has to be renewed at frequent intervals (the cartridges from Brother talked many times longer).