I actually was an Emacs user for many years and then switched to TextMate at first, then to Sublime. The major reason back then was TextMate's and then Sublime

I actually was an Emacs user for many years and then switched to TextMate at first, then to Sublime. The major reason back then was TextMate's and then Sublime's far superior support for editting files containing multiple syntaxes. While mmm-mode for Emacs eased the pain a while back then, it made Emacs slow down to a crawl sometimes and TextMate/then Sublime were also a lot easier to customize with regards to embedded languages without having to write elisp code all the time....