Just started using it, I think it looks good. Has some nice tools like Firebug and Lightbeam (tracks the trackers).
Ditto (dons flame suit)
Its smaller and cleaner - the less an app gets in the way of content the better. I’ve customized a few things in the tool bars but using it mostly ‘out of the box’
All my blocking, firebug, Dev tools and proxy add ons still work.
It’s a browser for consuming content, not an IDE, I don’t get all the hubbub.