Good replacement cartridges for Pixma IP7250 - having advantages over the original cartridges

I bought the Logic Seek XL cartridges, because the original Canon XL cartridges for Pixma IP7250 just 10 to 15 are more affordable than a new printer and are therefore sold too expensive in my opinion. This sentence XL cartridges are available for under 20 plus shipping - a significant price difference.

The Delivery (over tintendienst.de) went smoothly and quickly - the cartridges were securely packaged with me on.

The first impression was: fine workmanship, each cartridge as the originals equipped with status LEDs, perfect registration during installation (I have with other foreign manufacturers already experienced differently).

For essentially:

If the print results I can personally see any differences from the original cartridges, the level indicator is working properly and so far I have no problems with clogged nozzles on the print head (when other manufacturers experienced even after a short period of use).

Extra: The original cartridges are now no longer produces clear from Canon, so the personal refilling is hindered - these cartridges are transparent. However, to me the purchase price of these cartridges is not worth mess with refills.

Strong buy recommendation!