I recently purchased a 2007 Prius with no navigation, JBL or anything else special. It does not have an aux in which I desperately want. I installed a friend's old Pioneer stereo and it works but now the A/C and other touchscreen functions do not work. Can someone recommend an aftermarket stereo I can install preferably with a USB plug that will recognize an iPhone and allow control of it? If not than generic USB or even AUX? I don't need anything else special (DVD, nav, etc).