I recently purchased the Pacsafe Travelsafe100 for a trip to Italy.  I rented apartments and wanted a place to put passports, ipod, and other items  I would not be carrying with me all the time.  The Pacsafe worked great.  There always seems to be a place to securely fasten the Pacsafe where it is out of sight and I felt much more comfortable leaving belongings in the Pacsafe while I was out for the day.