Gno Schitt

I've been using it on my Mac and PC since RC2 and am quite happy. With the excption of some add-ons that aren't working yet it's been error free.
It seems faster overall, and there are a few nice design touches that appeal to me, like the most visited button on the toolbar, and the revamped autocomplete on the address bar.
It does use a smaller memory footprint as well, which makes me happy.
I'm still experimenting with it, but it is my favorite browser, and a notable improvement over 2 in my opinion.

I'm glad it's faster out of the box, since the FasterFox add-on is no longer functional.

We use a web app for tracking task progress and product defects, so I spend a ton of time in this browser. I'll be keeping an eye on how fast it performs throughout the day.