The original is just too expensive, because we have lots of room, a lot of equipment, ergo many cable :-)
The following combinations charger / cable work perfectly, in any combination.
Charge Cable
* Original Apple iPad Air & iPhone 5s
* Cable Matters 2m green
* Cable Matters 2m yellow
Chargers
* Original iPad Air Charger
* Original iPhone 5S charger
* Aukey AIPowerTM 4-Port USB Travel Charger Adapter multiport adapter Wall Charger for iPad Air / Air 2; iPad mini; iPhone 6 Plus / 6 / 5S / 5 / 4S
* Aukey dual port USB Charger Charging Adapter 2-Port USB multiport adapter mobile power supplies for iPhone 6 Plus / 6/5 / 5S / 4S, iPad AIR a 4/3
* Original iProtect Set USB charger and data cable 2x ca. EUR 10.- (2x uncertified 1m cable, go well)
I personally like the cable because they -
* Function
* Differ in color, then I know no matter where the cable belongs, if I find it in Kizi loading and actually heard the WoZi :-)
* A stable impression (of course subjective) leave.
They are slightly thicker than the original, I like even better because I am hoping thus a longer service life (wrinkles etc).
ps
My favorite is the charger listed
Aukey dual port USB charger, 2x 2A.
Approximately the same width as the original iPad charger, easy, no humming, there in white / black (did both).
The 4-port device is already broad and clumsy.
Off topic I know, but who looks after cables, it will probably do well for Chargers ;-)