Hmm ok so I guess I really need to reopen my search for the Anker/Skiva kind of USB chargers. I thought I was done with this.

Given my knowledge of anything related to electricity/amperage/voltage is nada, simple question:

Short of carrying the iPad charger along in my gizmo box,
What is the best 4 port USB charger that I can buy that
a) Charges my mini iPad retina at close to full speed
b) Parallelly charges my iphone 5s at close to full speed
c) Also powers my edimax nano

So far I've been using my Skiva, but I've noticed it takes quite a while to charge my iPad and iPhone and I need quicker charges.