[vegaz]

I use a template built by myself. I like to have perceivable differences (in color, etc.) between different levels of an outline.
I prefer using OmniOutliner to take notes, since I tend to put quite a lot of text in them. I use the main fields, not the notes.
On the other side, my personal projects start often in iThoughtsHD, and then move to OO via OPML, if necessary, or directly to a simple text document