One really nice thing about firefox is no more He's Dead Jim pages.

Chrome (even stable) seems to crash tabs all the time, while in the past 6 months firefox nightly hasn't crashed more than a once or twice. Another annoying thing about chrome is I never got a reason for a crash it just was a crash page and if I tried to reload that page it was very likely to crash silently again, with chrome at least I get the stop script dialog once in a while.

Chrome still starts faster (more noticable on windows than linux). There are also a plethora of webkit optimized experiments that don't work for shit on firefox.