Still think Courier New is the best (only?) suitable font for programming? You might just be missing a trick, there are a whole bunch of freely available fonts out there designed specifically with programming in mind.
Rather than write up the whole lot myself, I’ll point you at an excellent write-up of several of the most popular by Jeff Atwood.
I’m currently using Dina (a derivative of Proggy ) for my development, and find it very clear and easy to read. I also often use Lucida Console and Typewriter as scalable alternatives.
Sigh. And I thought I could settle down with Courier New until I get a LCD to enable ClearType for Consolas…
Lucida Console with ClearType is plenty decent for me. Aliased fonts are things which I had to live with in the eighties.
– Chris