For me with 16GB in an MBP, there is currently 20.5GB used + swap, and I haven't even started Firefox today, that would add another ~6GB or so. Usually if I'm

For me with 16GB in an MBP, there is currently 20.5GB used + swap, and I haven't even started Firefox today, that would add another ~6GB or so. Usually if I'm running Safari, Firefox and my 4GB Linux VM, that's 16-18GB used up in those. At the moment I have a few other things open, PDF viewer, Word, iTerms, Emacs etc, but nothing huge. Most of the time this level of usage is ok, but I've had times where I've had to wait 30+ seconds for the UI to respond at all (even the Dock or switching workspaces) and wondered if the system had crashed. For that reason I'm generally waiting for the next 32GB model before committing, that's assuming I stick with Apple instead of switching back to Linux (which I used for ~20 years before trying the MBP).