I started using sublime text as I wanted something like orgmode (but simpler), and didn't want to use a online outliner like workflowly (though I do love it).
I also have tried nearly all the todo plugins, including plain tasks, but wasn't quite happy with any of them. And I wanted something that would work well with markdown, and support a mixed list, of notes and todo items.
I have cobbled something together from a mish mash of other plugins. So the folding behaviour of SmartMarkDown is excellent. I particularly like the syntax of Markdone as it plays nice with markdown, and the solarized themes are nice - just need to modify them to highlight @ and # tags.
And on this thread there is some nice code for folding:
http://superuser.com/questions/452189/h ... ime-text-2
And this might be useful: