A fellow 1ZPresso user! I have a JX Pro and it was my daily use grinder before I got the Niche. After I started making espresso, I had a hard time dialing in the grind on the JX Pro. It seemed inconsistent, one shot would be perfect, and the next would be horrible with nothing else changing. I had been wanting something automatic for a long time, and decided to go with the Niche. I still use the JX Pro when I go camping, since the carrying case is great.