Hi - I am heading on a massive African overland tour from mid Nov '13 - mid Jan '14. Although they say that a sleeping mat is provided I have heard it is better to take your own. I am looking at getting an Exped one but don't know whether to get a Down or SynMat. Will it be too hot at night for a down one (I have heard they are the best)? I also need some advice about what type of sleeping bag to get - synthetic or down? I am in Australia so if anyone knows of some good brands available here that would be really appreciated. I am trying to work out what temperature rating to get..