FF has been my daily driver... longer than I can remember on essentially anything that can handle a browser. It's powerfull, feature rich, extensible, etc. But it does tend gain weight between major overhauls.

Out of curiosity, being a Linux user, I installed Chromium not 2 weeks ago and the thing is fast. It outperforms Firefox on my aging machine by far. And I was actually surprised. Yes, I do have the ghost of Google just waiting to sink its fangs in me, which I dislike, but I really have to admit the browser is fast, light and easy to approach for new users.

Will I let go of FF? Not really but Chromium did manage to get my attention.

I was impressed with Chromium but not enough to turn away from FF any time soon.

The machine I use on a daily basis is under powered, at best, for the demands of nowadays; it still does its job but it would appreciate being relegated for less intensive functions. But the moment I upgrade for a newer machine, my complaints will be going out the window and my small differences with FF along with it.

But objectively, I have to admit, based on my personal experience, that Chromium is faster than FF on my machine and less resource hungry.