Hello, I'm wondering which iPad I should get (Mini or Air). I will use it mostly for web-browsing at home, looking at YouTube videos in bed, and periodically taking it to school and maybe on the bus for 4G. Another thing is, when do you think a refresh is coming out? I'm planning to buy this with YouTube adsense money, so every penny is hard to get (since I barely get views). I will probably get ~$400 in around 14 months...lol...so do you think a new version will come out by March this year of September? Or should I wait until next year? Thanks for helping.