FF's built-in developer tools are still pretty sad, but nothing quite compares to full-blown Firebug on Firefox. The only place anyone else's tools outdo it, I

FF's built-in developer tools are still pretty sad, but nothing quite compares to full-blown Firebug on Firefox. The only place anyone else's tools outdo it, IMO, is Chrome's profiling (Firebug's is nearly useless.)