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.
There's one other area needing fixing, not only in these machines but in all super automatics I've ever tried - tiny puck sizes (diameter) = bad extraction. That's not me saying it. That's Dr. Illy and a wide range of scientific tests that the Illy labs have done finding the optimal puck size for superior extraction. At 46mm, these pucks are too tiny.
Like the best espresso machines found in restaurants and cafes, the Capresso EC100 uses bar pressure to extract the greatest flavor out of coffee grounds. You can use finely ground coffee, or for greater convenience on a busy morning, you can make use of the pre-packaged espresso coffee pods. You can brew two cups of espresso at the same time, and you can get your cups toasty warm to keep your beverage hot longer by placing them on the stainless steel cup-warming tray on top.
Jura machines differ greatly in size and weight. The smallest machines can be tucked into a corner inconspicuously, but the largest machines take up large amounts of space, and require some room to operate. We will be keeping track of the dimensions to make sure that you don’t end up with a 40-lb. tank for your streamlined, urban apartment. We know, everything looks smaller on the internet!