Have just downloaded Delphi 12.1 and tried out JSON Data Binding Wizard for the first time. Amongst other options it offers

JSON mapping library: JSON marshaling/serialization library, for which the Delphi types must be generated. Options are:

   System.JSON.Serializers (using TJsonSerializer.Serialize<T> and TJsonSerializer.Deserialize<T>)
   
   REST.Json  (using TJson.JsonToObject<T> and TJson.ObjectToJsonString)

I have tried generating code using a couple of JSON examples, and from what I can tell the differences between the two libraries are:

• System.JSON.Serializers supports records and JSON arrays as TObjectList
• REST.Json only supports JSON arrays as TArray

Cannot find any more information about the two libraries and Delphi help often just says: Embarcadero Technologies does not currently have any additional information.

Has anybody used both approaches and can offer other reasons to pick one over the other ?