As an aside, I have found Firefox on Android to work fine as long as the device is relatively pristine. But quickly deteriorates in performance and responsiveness as internal storage fills up etc. This while webit/blink based browsers seems to behave fine under the same conditions.
Firefox works fine on my low-spec pre-paid Android phone that I purchased for $50 a year ago. And the storage space on that phone just got filled up recently and I haven't noticed slow downs...
I personally use firefox as my mobile browser. Native add-on support (adblocker, anti-adblockers, anti-tracking, paywall bypasses) are of a huge value to me.
I like the consistent experience between the desktop and mobile versions - eliminating the need to download dedicated apps for each adblock-like service you want on your phone and the dependencies that come with it (root etc).
