I agree with tnorthcutt. Micheal Hartl has used Sublime Text 2 in his tutorial and he has a very positive feedback on it. It is a free one and you can buy it f

I agree with tnorthcutt. Micheal Hartl has used Sublime Text 2 in his tutorial and he has a very positive feedback on it. It is a free one and you can buy it for less than 50 dollars if you do not want to be annoyed by the software asking to buy it every once in a while when saving a document. I also have been using the plugin for Sublime Text 2 developed by Ryan Bates and could not be happier.