I've been using it for the past 3 months as my primary browser. The mobile experience is superior to Chrome, in my opinion. (Particularly, the reader mode on mobile makes certain sites usable due to lack of JS, and proper font sizes.)

Don't forget the ability to access mobile tabs/history from desktop and vice-versa.

Firefox for Android also has extension support, including uBlock Origin, HTTPS Everywhere, and the Unified Script Injector (userscript engine, similar to Greasemonkey).

yeah, I mainly use it for uBlock Origin.

The mobile version is generally okay, but it takes way way much more than safari to start up, which absolutely sucks when you just when to quickly look something up.

You might be interested in Firefox Focus, which is purpose-built for the "I just want to quickly look something up" usecase.

https://www.mozilla.org/en-US/firefox/focus/

I do, actually. But I really like to keep a history so I can later recall what I looked up (or sometimes, the other way around: I need to look at my history).

Firefox & Chrome are essentially skins of Safari on iOS, Apple has purposefully kneecapped both from using their own rendering engines.

Yeah, but I use firefox mostly for Sync (history/passwords), so there's a huge difference between it and safari for me.

As well as being able to install uBlock Origin on mobile FF.

Facebook and Google have been pretty high-priority targets for improvement as part of the Quantum Flow project, so don't be surprised to see them get better in 56/57. As a Firefox nightly user, Google Docs/Sheets is night and day better than it used to be.