[jeroenhd]

I prefer the Firefox dev tools, except for one thing: Chrome's websocket debugger is better. Firefox seems to miss some websocket messages and sometimes they don't show up at all for me.

The CSS dev tools for things like grids and flex in the Firefox dev tools are much better than Chrome's. The debugger is a tad slower if you need to prettify obfuscated Javascript but both do a good enough job at it.

I also prefer the theme Firefox applies to the dev tools, they feel more native and less like something slapped onto the browser.