should i subclass list<t> have property?

i have faced problem definitely mostly during final integrate months, during i've building system. unfolding this: i have kind vigilant radically list objects, nonetheless properties specific the nature. example:

• class tests:
  
  
  
  
  • contains test objects
  
  
  • has properties:
    
    
    
    
    • defaulttimeouts
    
    
    • defaultnumberoftries
    
    
  
  

should i have category subclass list<test> should i have inheriting object, simply carrying list ability beside fields?

i know competence bit inequitable personal ambience competence play purpose here, nonetheless i'd wholeheartedly know your opinion this.