I am going on a trip to Australia for 8 months and am trying to decide what device I should bring. I will most likely be staying in hostels or living out of my car. I already have an older macbook, but am thinking of leaving it at home and buying either an iPad or iPod touch or iPhone for increased battery life as well as portability. Any opinions on which one is more useful for traveling? I like the portability of the iPod touch or iPhone, but trying to do all of my emailing, photo uploading on the small screen might get annoying, hence the iPad option with decreased portability. Thoughts?