I moved earlier this year, it's been a good experience overall. The dev tools, which were what was holding me back, are _excellent_ and improving all the time.

Only thing I'd really love to see are container-specific windows, so 'Work' tabs would open by default in my 'Work' window.

Perhaps something along the lines of this? https://addons.mozilla.org/en-GB/firefox/addon/multi-account...

Full disclosure: I love this extension.