Well I mean it's all what you are used to. Personally, I've fallen in love with Emacs once you realize it's power. A lot of people don't like all the keyboard shortcuts you have to memorize, but in the end it all becomes muscle memory. I've used Textmate, SublimeText2, VIM (though not extensively) and they are all great editors. But for me, Emacs is insanely powerful, incredibly customizable, and once you start getting into it and get all your .emacs set how you like it, it's hard to beat. In the end though, they are all just text editors. Try them all and see what suits you best.