hello,
yes, Firefox is a great browser because of the extensions we can install on it, it's the best on that, far.
But what is sure is that Dragon without any extension gives protection that is far away beyond other browsers.
and It's the first thing I look at to make the choice for my default bowser.
I tested Dragon on website linking all websites compromised with lot of different exploits, I tried like one hundred of URL iinfected, (that's a bit long but sometimes when I'm starting on something, I can stay on it for hours).
I had red alerts about those websites and advice to not loading them,
So I continued and loaded all those websites. not an exploit was able to compromised the browser.
The only thing I noticed is that I could download some file on the machine, but even by downloading those files that were infected,
nothing happened, except if you decide to launch them on your system (what is totaly stupid).
So i trust Dragon for browsing the internet, and internet is the first place to get infected if you surf on some bad places that are not detected as dangerous.