What is best solution to process messages from Service Bus Queue, Azure?

Hi there,

I create TCP service to receive data from electronic device but as there can 2500-3000 devices at a time can interact with my TCP service so I want to put those messages in queue for further process. I have to deploy my solution on Microsoft azure platform and I see two options Azure Queue and Service Bus Queue. I think best solution for me is Service Bus Queue as no. of device can go beyond ~5000+ in future.

Now my concern is how I should process these messages from queue on azure what will be the best solution for that. In my earlier project, we implement WCF service on MSMQ binding to read message from queue and which was very successful with huge traffic. But now it is Azure platform so can you please suggest what the best solution is for that fromperformance and and security point of view.