The one reason (obvious) that I should use STOMP over any other sub-protocol, is that I am using spring-webSockets so for STOMP I don't need add any additional library at the server side, for others I would need to. At the clients there are many JS libraries that I can use like socket.io for STOMP and similar JS for WAMP and others.
Since, my main concern is at the server side: So, STOMP it is.
I will update this post if I find out something new while implementing my solution.