Firefox all the way. Add-ons, bookmark sidebar, customization. I only use chrome for Youtube. I really can't stand not having the bookmark sidebar. As far as speed I don't get it. I have a dual monitor setup and I've run FF and chrome together loading the same sites and I didn't really notice any if much a speed advantage between them. Some sites loaded better on Chrome while others loaded faster on FF. I think the speed perception with Chrome is just in peoples heads. The only thing I know Chrome is faster in is initial loading. I can wait a couple extra seconds to have all the customization I get with FF vs Chrome.
Firefox is great and I'm not trying to get you do use anything but what you prefer.
That being said, do you mean this bookmark sidebar?
View attachment 71306
You can sync the bookmarks from any browser.