I'm about to buy the newest ipad and wonder whether to get the 3G version, or buy some kind of mifi system to use with the ipad and other devices when camping away from wifi. I would need 3G only occasionally, mostly when camping so I'm looking for an inexpensive solution. Does anybody have experience of these mifi hotspot devices? What's the best answer? The mifi would enable my old ipad (wifi only) to be used, kindle to be connected etc at the same time I suppose?