20 is the age gap dating site where you can only view profiles of people who are 20 years older, or 20 years younger! Anyone outside of this range is never shown. For example, if you're 40 years old you can date anyone aged 18 to 20.
Lusso is the dating site for the super-rich. Limited places and only allows communication between upgraded members. Anyone is welcome to join and take a look around. Lusso has a very strong focus on privacy.