@holgero @gamingonlinux None. They are either based on the same (Google-maintained) tech as Chrome, forked off Chrome, forked off Firefox, or they are missing features that some important websites require...
I would love to say Servo, but Servo isn't really usable yet.
Since using Google tech would mean supporting their dominance over web standards (guess why it's so hard to make a new browser from scratch), it probably has to be some Firefox fork...
(I just don't know which ones are good.)