Just wanted to add a +1. I use FF with strict content blocking enabled which means that things like YouTube videos and captchas are often randomly missing from

Just wanted to add a +1. I use FF with strict content blocking enabled which means that things like YouTube videos and captchas are often randomly missing from pages, as are images hotlinked from third-party servers. I see this as a feature rather than a bug and it's easily temporarily disabled if it causes an issue. Of course, I use uBlock Origin as well. Performance-wise I have no complaints and the sync across devices works just as well as it does in Chrome.