philip - 10:15 am on May 11, 2013 (gmt 0)
RedirectMatch ^(/[^/]+)$ http://new.com$1/
but it did not add the trailing slash according to webconfs.com/http-header-check.php
i ended up using just rule #1 and #3 and every single url found its way to the new site. the category slash was added on the receiving end.