I use Sublime, but mainly because its search features are the best I've seen in any text editor. I can grep the entire codebase I'm working with for a specific string or pattern, or limit the search to specific kinds of files or files in specific directories, and see the results listed one after another in the find tab. Click on the result I want and I'm editing that file in that spot.

I've considered trying out other editors (Emacs, Vim, etc) but I haven't seen much in the way of first-party multi-file grep like I have with Sublime.