Opera used to be a fantastic web browser, with a custom high-performance Presto rendering engine and features like tabbed windows that didn't show up in competing browsers until years later. However, the modern Opera browser is a shadow of its former self, reliant on chasing trends and meme advertis...
I've been trying out Floorp for a few days now. It's a great browser but honestly I don't see that much of a difference compared to regular Firefox. If I had to pick, my favorite feature from Floorp would be the fact that it packages changes that would normally reuuire fiddling with userChrome.css into simple toggles in about:preferences. I especially like how it makes hiding the horizontal tab bar so easy when I use Tree Style Tabs. That being said, I have fully switched over anyways.
I want the latest version of my browser tho, I don't want the "stable" version from 6 months ago. Never had a stability problem with Firefox to warrant the wait.