Abbadon best detachment with chosen

So, following on from my previous post it was established that chosen is definitely the way forward with abbadon. However now we have. 500+ point brick the question is what people's thoughts on what detachment and methods are people using to a) deliver this brick b) keep it alive as well. Pretty much as we all know if your running abbadon you need to build the list around him in order to get the best effectiveness of the 300 point model. Thus the reason for asking