We have a half dozen content models that use the markdown content type (i.e., long text with the appearance as markdown).
I see a lot of chatter about swapping such content to a RTF field. We were able to get the markdown content fields to work for our needs using html. The RTF fields don’t have a preview tab which is why we prefer not to use that content type.
Bottom line: Is there any reason to use RTF over long text (if we don’t care about limiting the available tags for the content type) ?