Is the Jura J10 worth it over the E8?

The J10 adds cold brew, a larger drink menu and the Coffee Eye sensor. If you mainly drink hot espresso and milk drinks, the E8 covers those; if you want cold coffee from the same machine, the J10 is the stronger pick.

How does the J10 compare with the Jura S8?

Both use the P.A.G.2+ grinder and touchscreen. The S8 has dual milk spouts for making two milk drinks at once, while the J10 adds the Cold Extraction Process.

Does the J10 make real cold brew?

Yes. Its Cold Extraction Process brews coffee with cold water, so you get cold brew without a separate brewer, though a cycle takes longer than a hot shot.

What is the Coffee Eye sensor?

It detects the cup size and position and adjusts the drink to fit, so a small cup does not overflow and a tall glass gets a longer drink.

Can I use pre-ground coffee in the J10?

Yes. There is a bypass chute for pre-ground coffee, useful for decaf or a specific roast.

How much maintenance does the milk system need?

The one-touch milk cleaning cycle runs after milk drinks. You still need to rinse the milk parts and run descaling and cleaning programs on the machine's schedule.