Mac users who do a lot work in text files (HTML, coding, etc.) and are not fond of the editor you use, should take a look at TextMate.

TextMate brings Apple’s approach to operating systems into the world of text editors. By bridging UNIX underpinnings and GUI, TextMate cherry-picks the best of both worlds to the benefit of expert scripters and novice users alike.

TextMate has a very impressive feature list which are ideal for development projects. Additionally, it offers clipboard “memory” for multiple copy-paste commands which can be incredibly useful.

TextMate is not a free product (it does offer a free 30-day trial), however if a lot of your work is done in plain text files then having a powerful editor is a must.