See: https://code.google.com/p/chromium/issues/detail?id=35487
Only issue I have is the fact it changes more or less every release, leading to a day or so of re-learning how to do certain tasks.
Does Safari support source-maps yet?
It has a platform limitation.
Safari does not work on anything but MacOS and iOS, so developing for it requires additional testing.
I've met quite a few developers that really like the safari dev tools. If your not developing on mac though I don't know how good your experience is (and linux is a non starter)
The Chrome timeline is rad when it comes to performance tuning, and maybe a lot of devs are light on the JS and heavy on the CSS. I jump into Chrome, briefly, whenever I want to tune performance.
All of the dev tools have quirks, bugs, and dumb UI usability issues, but when I want to work with a large codebase (which is every day of my life), I find Firebug works the best.
I haven't really found anything Firebug does that Chrome doesn't, and tons of stuff Chrome does that others don't, like debugging Web Workers, or awesome profiling tools for both JS CPU/HEAP, as well as internal browser profiling. Chrome Tracing is unparalleled.
I've always gotten tripped up by the fact that Command-F pulls up a local file Find toolbar when I've focused a JavaScript source page. I assumed that was the extent of the Find capabilities Chrome offered. I'm 51% angry and 49% embarrassed that I never knew this! :)
Agreed the Web Workers debugger in Chrome is very advanced and as I recall they had that available straight away when the Web Workers feature was first released.
I think the Firefox/Firebug guys have only just added javascript console output for web workers in Firefox 30 and the debugger protocol for web workers is still in development.
I agree that Chrome's developer tool suite is more comprehensive than other browsers. For my day to day development tasks, looking at network calls, inspecting html and debugging CSS/JavaScript, Firefox+Firebug is still the most user friendly and accessible to me.
I agree with you on webdevtoolbar, that is a fantastic tool for inspecting/altering aspects of the page. I wish webdevtoolbar had user agent tools. I have to run another plugin to give me user agent spoofing.