Which browser (+ addons & search engine) are you using?

Opera. Switched to it from Chrome and left on it.

Extensions:
Adblock is build-in, but i also use uMatrix.
Tampermonkey, Stylish for userscripts and css, since Chromium-based opera doesn't support userscripts and custom css.
Google Translator
WebRTC Desktop Sharing & Tab Capturing & Sharing
Web Scrobbler (for scrobbling YT to Last.FM)
Steam Database, Steam Inventory Helper & Enhanced Steam
Reverse Image Search & Image Search Options (to reverse-search image on google and SauceNao/IQDB/WAIT)