"Today’s update includes Sync, Resizable Tab Tiling, Floating Web Panels and over 1,500 improvements since the first version of Vivaldi."
I tried Vivaldi a while back and was just starting to use it a bit more as one of my alternative browsers before my desktop hard disk failed around the start of the year. But since then I haven't returned. Though it has been sitting gathering dust on my laptop.
But I thought I'd install it again on my desktop too. I probably still won't use it much (I live mainly between Firefox and Opera at the moment) but I find that for certain specific tasks I sometimes turn to one of the other browsers. No one browser is better than all others for all tasks.