I switched to Chrome in 2016 because I needed to easily switch between multiple profiles. With Firefox I have to launch with a command line switch. :(
You should check out Container tabs in Firefox: https://wiki.mozilla.org/Security/Contextual_Identity_Projec... . It's like per-tab profiles, no need for multiple copies of the browser, etc. Totally changed the way I deal with sites I need multiple accounts for (like AWS). You can use Containers in Nightly or via the Containers Testpilot experiment here: https://testpilot.firefox.com/ . disclaimer: I work for Mozilla
- it seems to be missing features when running with Tab Tree
- the ux of Mozilla vertical tabs experiment is weird and IMO bad. And I rarely complain about UX. The problem is: the tab bar goes up on the side of the awesomebar and slides it back and forth as the tab panel expands and goes back.
I have reported this but so far nobody seems to care.
Another small thing: I more or less love Firefox in general <3