FF just got web socket inspectors so I really don't know what chrome dev tools has now. Everything about ff dev tools is better. Especially looking at css layouts.
As a web dev, I find the FF dev tools a good bit less performant, but I still try to use it always without reverting to Chrome.. The one feature I have not found in FF dev tools is Search, this is very handy for find random JavaScript on a JS heavy site.
This has finally allowed me to switch. I’ve been trying to since quantum came out two years ago, but this was always a deal breaker.
Firefox is generally still a little buggier and less performance in my experience, but not so much that I want to switch back. Hopefully they can stay relevant.
Edit: This post prompted me to Google for it: https://developer.mozilla.org/en-US/docs/Tools/Debugger/How_...
Move along, nothing to see.. :-\