It's also kinda-sorta-technically free as mentioned before, and it's very fast. Sublime Text can be customized as much as you want using the Plugin Manager available for it, so if you want to keep it as simple as possible you can.
It's technically free (since the only non-benefit from using the trial version is you get occasionally nagged about buying the full product), and it can do all of the things you'd want from a text editor: A good text editor you could use is Sublime Text.