Seeing as everybody's using this space to plug their favourite font, and the one I use hasn't been mentioned yet: I'm partial to Generic Mono II (http://luc.devroye.org/fonts-75172.html & https://github.com/organicplanning/hackedfonts). It has slashed zeroes and, with a reduced character spacing, just looks nice and otherwise doesn't distract from what I'm doing. Though it's coverage outside of the Latin character set leaves a bit more to be desired.