For me, it wasn't about a particular feature -- it was just about the feel of the two. A couple years ago, I was doing a lot of work on both my Windows box and

For me, it wasn't about a particular feature -- it was just about the feel of the two. A couple years ago, I was doing a lot of work on both my Windows box and my Mac. I noticed that I started to regard my Mac as "soft" and "friendly", and my Windows machine (with large external monitors) was "harsh". I felt mildly stressed out working on the Windows machine, even though I would frequently switch between them sitting at the same desk. So, on a whim, I looked up the font on the Mac (Monaco), and set it up on Putty, and (surprisingly) it made a big difference. I felt like the code I had was easier to read, and I just generally worked better. I've since decided I like Bitstream Vera Sans Mono, but at this point it's just something I set up on new computers, with no thought. It's not a rational thing, but who ever says I have to feel rationally about my tools? :)