Comparison between sets and classes

Sets Classes
Objects can be assigned to multiple sets. Object is given a single class.
Automatic ability to see sets in Lookups. Lookups can be configured to sort by class.
Can be used to show or hide specific extension fields and parameter codes. Can be used to show or hide any field, table or tab.
Can be used as search criteria to find objects. Can be used as search criteria to find objects.
List is configured in the Symbol form. Configured in standard enumerated list.
Viewed as a table on its own tab. Is displayed as a drop-list in the form or the Main tab in a form.
Used to filter views on the Reports tab. See the Lookup Set filter.