I have various content types which have sub-types in my Drupal 7 site. e.g. "downloadable resources" content type, and within this there may be reports, presentations.
Is there any reason not to add this to a select field with a list of value=>label pairs?
Should I create a separate vocabulary for these options and add a new field referencing that terms? I have a couple of other content types similarly modeled, so I would end up with a load of very small (2-3 terms) vocabularies.
Taxonomy seems to be favoured but instinctively it seems overkill?
Edit: or is it better to have very granular content types (report, presentation...), even though the fields are the same between them?