Sending different types of objects in Service Bus Queue (Queue or Topic)

Hi Folks,

The sender would send different types of objects (different schema) through ServiceBus. The receiver wants to understand the type message and process the message accordingly. 

What is the efficient way of understanding the type and processing it ? Using Message.Label is the way of doing it ? 

Or using the ASB Topic to send different types of messages in different topics ? 

Thanks !