Quick recommendation for my favorite mono spaced font Triplicate. It’s head and shoulders above the rest in my opinion and I’ve tried just about all of them over the years. DejaVu had been my all-time favorite for decades. No matter what I tried I would always come back. With the higher resolution retina displays that old font began to look somehow puffy and bloated. Fuzzy even. Looking for a replacement I tried Source Code Pro, Hack, Ubuntu’s font, but always ended up switching back to DejaVu.
Triplicate has a fairly unique look, and seems thinner but bold enough to stand out. Hard to explain, so maybe I’ll try a screen shot.
It isn’t free, but well worth it in my opinion.