Be nice. Or else.
I've been digging Operator, the new Hoefler & Co. code font. It's highly legible, although very stylistic. Couldn't be more different than SF. Available in CodePen now.
I don’t know about Operator though. It’s got so much character in it that I wonder it would be too overwhelming for large amount of text.
Operator, the two-hundred-quid-ultra-hyped-monospace-comic-sans.