Comment by zzo38computer

I think it depends what you will intend to do with the data (which is true for all of the formats that you mentioned); not everyone will do the same thing with it even if it is the same file. It might be helpful to know from other programs that do not know this schema to be able to parse the data (not always the case when using IMPLICIT types in ASN.1, which is one reason to use EXPLICIT instead, although it has avantages and disadvantages compared with IMPLICIT; however, in DER all types will use the same framing allowing the framing to be parsed even if the specific type cannot be understood by the reader), and can also be used in case the schema is later extended to use types other than the ones that were originally expected. (I prefer to use ASN.1 DER in my stuff, although JSON and other formats are also used by other formats that were made by someone else)