I've been mulling this over since yesterday. The best way I can explain is that I genuinely taste different "notes" in coffee brewed in different ways and from different beans, whereas with most espresso machines the taste feels overpowered by one singular note, usually something nutty, close to peanuts. It's not disgusting or bad, but it' kind of like having a preference in tea or sauces. You could eat your meal with that one sauce you're offered, but you might have a different preference. And coffee is the sauce of my days, heh.