This is an extremely affordable entry into the world of espresso and cappuccino. We are not connoisseurs by any means. We only bought this machine because it was on a Black Friday sales. And we are glad we did because once you've had the output from this machine you may have a difficult time going back to the normal coffee makers (Keurig and carafe coffee makers).
The learning curve is a bit steep, and the manual, while not a literary marvel, does take a few passes to understand. A YouTube video or two won't hurt in the learning process. The buttons are touch-sensitive and a bit finicky. They don't always work the first time, so you might have to swipe your finger over more than once in order to have the desired outcome. They become even more temperamental once they are covered with a layer of steam from the spout. But no matter what you do, do not press them hard, for that is guaranteed to fail (as we found out the hard way). Again, they are intended to be "touch" buttons.
Your container should be no more than around 4" in height. Anything taller than 4 3/8" will not fit under the handle and will tilt precariously.
Once you get the process down, this produces top notch cappuccino. We don't see how or why we would ever need a more expensive machine than this. The only thing that remains to be seen is how long it lasts. If we can get a year or two out of this machine, it would have been worth it.