Opera or Brave. Still planning to try Vivaldi and Pale Moon.
I use Palemoon for my Mozilla browser, and Flashpeak for my Chromium browser, HOWEVER, I’ve been tinkering with Disenter and am probably going to start using that as my primary browser. I’ll keep Flashpeak however cuz it allows me to download YouTube videos.
You may be interested in this thread: Vivaldi 3.6 is out with two-level tab stack https://freerepublic.com/focus/f-chat/3930575/posts