This is my first machine and, overall, it’s great. The main issue is that there is no way to reduce the volume of grind. The app (which is required to change any of the features) will allow me to adjust how long the automatic grinder works but not reduce the amount which results in a lot of wasted espresso beans. There is so much grid  in the the portafilter that it won’t allow me to lock it in place. The only way to fix the issue is to scoop out some of the grinds and toss them.