I keep glancing at Berkeley Mono's site since it popped up on HN recently when they added ligatures. As a Fira Code user for some time now the ligatures are a "must have" for me, so that helps a lot. Something about the overtly 70s Mainframe aesthetic doesn't quite hit for me (though very well crafted and almost), though I have to say what little is currently teased for their next font Houston Mono has me intrigued enough to sign up for their mailing list.
Why? This whole article and almost are all the comments are on how many existing choices there are and "designer supports ligatures" is an easy enough filter to find a good, strong subset. I don't need it to be anything more than a filter of current options.