Sublime just always felt like a "ported" app. Chocolat is native, fits in with OSX perfectly, and at least for me, achieves the perfect sweet spot between customizable and minimalist. I just find myself being less "distracted" by the editor, and just getting my work done, than with anything else I've used. It isn't really one single thing that does it, but just the sum total of it. Not sure if that helps...