From experience, I can report that portafilter machines are cleaning-intensive and that the grinder always crumbs something out, and the dregs... Whatever: I love it! Conclusion: Very delicious coffee drinks, cumbersome operation and cleaning, no mold problems, high space requirements, premium prices (for dual-circuit or dual-boiler machines and definitely recommended grinder), high power consumption (it has to stay warm). Built-in machines are designed for a certain throughput and only remain mold-free if they are really used and maintained a lot. I tend to refuse coffee from fully automatic machines in unknown households and offices because I know what they can look like inside.