I'm using for my Jura Impressa Z7 only the original Claris Blue cartridges. The quality, price and performance ratio is right just here. Who wants to be descaled device constantly? The Claris cartridge that is completely eliminated!
It is important that one checks before buying if you need white or blue cartridges! The but you can easily check on the Jura website.
Conclusion: If you love your Jura coffee machines, can not avoid this product. Highly recommended!