@jon I found out that also Edge is quite nice. Very friendly, the tabs can be moved to the side position, the same panel as in Vivaldi, excellent translator. But there is not so easy to switch between search engines, also not so easy to switch to the main workspace, and there's almost no Speed Dial.
I've been living with Edge (on macOS, imagine) for some months when Vivaldi has several annoying bugs, but later I came back to Vivaldi, and now Edge is my second browser, for some different cases :) Good luck!