I would suggest a third option, which is much less expensive than the other two, and won't introduce ground loop issues. Just buy a quality power strip that does not have any filtering or surge suppression whatsoever, and use it to expand the number of outlets. Plug the power strip into one of the outlets on the HTS3600, and plug into the power strip two or three or four components (as necessary) which do not need to have any isolation or filtering between them (such as line-level analog components).
Regards,
-- Al
Regards,
-- Al