I use FF and my coworker uses Chrome. He says the thing that pisses him off the most when watching me use FF is that there is no fuzzy search when manually applying styles. I.e. you have to search "justif..." to see "justify-self". You can't just search "self". That's the only example I've really noticed between the two but I'm sure there are more. It doesn't bother me enough to change though.
