[ConfucianNardin]

If you're looking for performance, don't go with Vivaldi, at least if you use many tabs.

With many tabs (>= 100 or so), it becomes really sluggish. For example, opening a link in a new tab can take approximately five seconds. Chrome, which it is based on, does not have this issue. Chrome is however unusable (with many tabs) for other reasons (lack of lazy loaded tabs essentially causing a DoS for many minutes when starting it, at least on Windows).

[kodablah]

Shameless plug: try https://cretz.github.io/doogie/ which is my Chromium-based browser with trees. It is not the most mature thing out there, but I use it for most things. But geez, that process-per-tab of Chromium approach can really blow up your memory.

[hateduser2]

If you can get LastPass support this becomes a real option for me! I also like gmail notifications but I can always get that elsewhere.

[dvdgsng]

Not 100+ tabs, but I experience no performance issues at all at ~60 tabs, which is kind of too much already.