Been using Vivaldi for about 2 years now.

Old Vivaldi was ass, the new vivaldi is awesome from a usability perspective. A ton of customizability, very clean, advanced features like workspaces and tab groups, …

Honestly the only things I’m missing is custom browser base (not chromium) and easier switching between browser profiles (cookies etc).

Yes, it is based on Chromium. But in the Chromium universe, it’s the best thing I’ve seen to date, no doubt.