Not trouble free, as they all seem to jam periodically, but easily fixed. Per J-C, the problem is using very oily beans, which we do as we love very dark, heavily roasted Starbucks beans. The part that jams is the press mechanism. When it expresses the puck, it clogs and won't go back up. This seems to be a criticism for many of its machines, but it's hardly a deal breaker.
The Jura A9 truly shines in the milk drinks department. It features 2 height adjustable spouts that go anywhere from two point two and up to five point four inches if you plan on using taller However, when it comes to the milk, the machine uses a pick-up tube system. What this means is that now you can just place the tube into the milk container and prepare delicious milk based drinks. For better results though, it’s best that you either get Jura’s cool control milk cooler or their optional thermal milk container. That’s because not only is it better to keep milk chilled for sanitary reasons, but chilled milk also produces better froth.