You never mentioned whether or not you wanted a free one or if you would be willing to pay for it...

I believe that Ultra Edit is worth every penny I paid for it. (v10.x goes for $30)

Look here for a full list of features. The one I like is the ability to build your own usertools which is where I put perl -c %F where %F is the file I am working on. Now all I have to do is press a button on the toolbar and the file I am working on is saved and the syntax is checked with the output going to a piece of the screen at the bottom of the window.

Another feature I really like is the ability to use regex for searching.