Comment by 20k

For me the two reasons I can't live without are

1. Firefox's ctrl-f search doesn't highlight all instances of a found item on the right hand side. It sounds petty, but its a gigantic timesaver for looking through research documents

2. Firefox's tab crash recovery isn't as solid. I use chrome with fully persistent tabs, and its a gigantic pain if I can't re-open them

If I could find a way to fix these I'd swap in a heartbeat