Breath of fresh air is the phrase I'd use too. I didn't even realize that they were a hardware company, but after using the OS, I'd seriously consider buying their gear when the time comes for a refresh.
For what it's worth, even if you don't buy their hardware (I don't have any either, although I'm looking hungrily at their desktops and keyboards), it looks like System76 offers an option for directly supporting Pop!_OS through their site, like you might for other open source projects through GitHub Sponsors, Liberapay, etc.