Am looking to get a iPad soon but would like more then the 128GB. As the 128GB cost a lot of money, am looking to get a wireless hard drive and just get the minimum 16GB iPad. Am not too bothered about the GB size of the wireless hard drive as i already have a 2.5" HDD laying around so i can just swap it over. Can any recommend me a cost effective wireless drive which is compact in physical size as well. Many Thanks.