This morning I have a new favorite: SyncMyCal. Thanks to whoever commented here and clued me in.
SyncMyCal does everything GooSync does and more. It lets me not sync private events. Instead they show up as "busy" on my Google Calendar. This is a good step forward. SyncMyCal is awarded +2 SwampDrain points of their own.
The only reason you'd want to still use GooSync is if you don't like to sync Outlook to Google Calendar; GooSync (and OggSync) sync directly from Windows Mobile to Google. A Windows Mobile version of SyncMyCal is in development.