Just to clear things up on the AppRadio front. I have a Pioneer AppRadio2 and it works with my iPhone 5.
HOWEVER I did have to buy a lighting cable, HDMI to lightning converter, HDMI cable and update the firmware on the AppRadio before it would support iPhone5's
Edit: Also there is an AppRadio3 now. http://www.pioneer.eu/uk/products/25/299/35829/SPH-DA110/page.html
No mention of 5c/5s support but I would expect it would work fine as it does with the 5.
This one also supports a lot more android phones than the AppRadio2