I have an iPhone 5S and soon will get getting an iPad Mini (first iPad). I know those both of these deceives come with lightning cables, but I will need additional (car, additional home, work). I would like to get a longer one (2 or 3m). I know Apple sells a 2m lightning to USB cable but it is extremely expensive ($29.00). Are the cheaper 3rd party cords (belkin/china-based brands) any different than the Apple ones? Is the charging speeding the same or should I be worried that my battery may fry? Also, are the iPhone and iPad chargers interchangeable? I'm just having a serious hard time spending $90 on chargers.