I've been using "Envy Code R" ( http://damieng.com/blog/2008/05/26/envy-code-r-preview-7-coding-font-released http://damieng.com/blog/2008/05/26/envy-code-r-pre

I've been using "Envy Code R" ( http://damieng.com/blog/2008/05/26/envy-code-r-preview-7-coding-font-released http://damieng.com/blog/2008/05/26/envy-code-r-preview-7-cod... ) for awhile. I find it much more readable.