Value Types Vs Reference - Reference advantages

Yes the main advantage of Reference type will be the ability to work with the exact same Object. Classes are like Object factories, they create the Object and store it and a reference to it in memory. For example lets say we had a Car Class.

var myCar = Car(make: "Mazda", model: "RX8", color: "black cherry")
//because this is reference type we can now send this particular Car Object
//as a method parameter. 

changePaintJob(carToPaint: myCar, newColor: "blue mica")

The method is accepting the reference to the same myCar Object and doing whatever that method does on that same Object, resulting in only one Car Object in memory that had its Color changed. If this was done as a struct and Car was sent in as a Value type only copies of the values will be sent, not the Object itself. Value type would result in 2 cars in memory, the original still black cherry, and the copy of those values that then gets changed to blue mica.

Hope this helps. Please let me know if I can clear any specifics up.