Firefox is back as a contender for the best browser, even though admittedly the criteria for that are very subjective. Some would say that having a browser that respects your privacy wins from the get-go, but a lot of users (me included) are big fans of convenience (like automatic password syncing), which Firefox can do now!
The CSS rendering engine has been sped up incredibly, so much that Mozilla made a video comparing the rendering speeds of Chrome and Firefox and the results are in Firefox favour on many sites.
Personally I feel that the performance is great, especially when you work with a lot of tabs at once (which I do, so it’s perfect for power users)
The user interface has been overhauled, even if it isn’t introducing any crazy changes, it offers a new look and easier customisation of the order of elements and caters the need of anyone who likes to tweak their browser experience a bit.
If you want to just give it a shot, try the Firefox Developer edition, since it has the most changes and overall is incredibly stable for a developer nightly release.
It’s great to see Firefox back in the ring and not only as a reminder and a moral choice to keep the browser choice from becoming a monopoly, but as an actual hardcore browser, that is fast and has password sync.
Read Mozillas full announcement on their blog: Screenshots, Send Tabs and more! Today’s faster Firefox provides upgraded features for all users
Which browser do you use on mobile and desktop at the moment?