FaceAndFacts can help.  You can tag a contact as a Favorite and then limit the view to just favorites.  Tagged contacts will appear in the Favorites view regardless of their group assignment.  

Press on a the contacts photo until it turns red then release.    This action is called a “long press”. 

A red star will appear in the lower left corner of the photo to indicate that the contact is tagged as a favorite. 

Any photo can be used to apply a favorites tag to a contact. 

You can scroll and tags many contacts as you wish. 

Tagged contacts will appear in the Favorites tab regardless of their group assignment.

Scroll to the contact of interest and press until the photo turns red, then release.  

Scroll to the contact of interest and press until the photo turns red, then release.  

If your search reveals more than one contact you can tag as many as you like.  Tags are cumulative and are NOT erased when you perform a different search or switch to another view. 

To remove a contact from the favorites list, simply press on a red starred photo until the entire photo turns red, then release.  The red star will be removed which indicates the contact is no longer a favorite.   Adding and removing tags can be done from any screen that displays a contact photo including the search results in the List view and the contact detail screen.

If you remove a tag from a contact while in the Favorites screen, the red star will be removed but the photo will not be immediately removed from the favorites list.  This allows you to correct an accidental removal of a tag by simply long pressing on the photo again.  Tapping the Favorites button at the bottom of the screen a second time will immediately clear untagged contacts.    

You can tap a photo to see more detail about a favorite.  Then you can scroll to the detail for the next or previous favorite.  An easy way to review the detail information for a few key people at the last minute. 

The Favorites tab is global.  Any contact marked as a favorite will be displayed, no matter which group it belongs to.  If you wish to see only the favorites of a particular group, you can use the Favorites Button.  It is available from the Grid tab or the List tab. 

The Favorites tab is global.  Any contact marked as a favorite will be displayed, no matter which group it belongs to.  If you wish to see only the favorites of a particular group, you can use the Favorites Button.  It is available from the Grid tab or the List tab.