Top spare, difficult support!

At the beginning I was very excited to see whether these cartridges will meet my expectations.
Since I have also been actively involved with printing and color, I look closely at the quality of such a product.
My experience with replacement cartridges of various models Epson has a very long history.
Now a Canon model is to be had to the series tried.
But when I put the cartridge in my printer (Canon Pixma IP 7250) was one of the cartridges from the printer erkannt.Der exchange took place later with slight Schwierigkeiten.Zuerst I should all return again and the amount should be refunded werden.Dies but sounded to me illogical since I had the remaining four cartridges already in place, and these would not let dry out, which can happen quickly if no cartridge ist..Später inserted after several e-mail exchanges by Amazon, I have the ink service a Reture Abwiklung for the affected cartridge get and a functioning new cartridge bekommen.Nach many printed pages, I can see that the colors of these replacement cartridges that are almost indistinguishable from the original.
I can express a clear Kaufempfelung for this product but it should but one, are a bit more customer-friendly with a possible exchange, therefore only 4 points!