I couldn't imagine writing anything without Ulysses these days. I've been using this wonderful wrting tool for almost three years but with version 20 released today, I had to write a review to say "thank you" for makign this app even better.
I recently had an export problem with a thesis chapter into Word; a consequence of a few careless Markdown edits. Customer support was superb: not only did I get immediate help with my request but advice and guidance from someone who was passionate about the app. Download it with confidence.