I really love Firefox, and I've been using it since the Netscape days. Even with the latest improvements (Quantum, webrender etc) it's still not quite as snappy as Chromium based browsers, and a bit less smooth on infinite scrolling pages with a lot of data (eg Reddit); but I love it anyway. It feels like home, and I have my user.js set up just exactly how I want it, with all my favourite privacy extensions set up precisely. Nice. They've also finally implemented VAAPI in Wayland, for native hardware acceleration of all video codecs out of the box on Linux (as from v76). Awesome!
I'm currently typing this in Brave, which I've been using full time since v75 hit. I'm that annoyed with the way Mozilla is pushing this stuff and removing user choice. With only 4% market share, you'd think they'd be tiptoeing a little more delicately around their (primarily technical) userbase.