Like most things, coffee is subject to diminishing returns. I have also owned nearly every device invented to make coffee - as I'm sure many others here have - and I've settled on a simple over-the-mug pour-over cone, but mainly because there's no moving parts or tubes to worry about cleaning. I don't even know what "correct" pour-over technique is, so I'm basically making bog-standard single-serving drip coffee with…
You can take my espresso machine from my cold dead hands. Then again I don’t understand why Americans pay so much for their coffee. Here 1kg of fairly good single origin coffee is 22€ and the quality is miles ahead of instant. You don’t have to become an insufferable snob to enjoy better coffee.
Apparently they're called Moka Pots, never knew that.