I've really loved using Arc recently, it's a very fresh take on web browsing. I've found that its spaces feature handles my uses of (most) bookmarks and tab groups in a more coherent way. My main annoyance is that there isn't any sort of backup standard bookmark system built-in.
I also like Spaces a lot. I think my main issue is that I don't like the vertical sidebar, and doing cmd+s to hide and show it all the time is not that great (also because some web apps hijack cmd+s).
