I have an iPhone 4. I also just got a 1995 Jeep Cherokee. It has an aftermarket CD player head unit. No aux input or anything flashy, and can't play my iPhone on it as a result and I have radio stations I much prefer over my city's offerings. I want to get something that I can easily play music from my iPhone for cheap, also maybe a mount so I can use GPS and have easy access to control the music/answer calls. Hands free is the law where I live, so that helps too. Bluetooth seems to be convenient, but then again if the phone's in a mount and plugged in to keep charged, USB is more than sufficient if it can transfer audio (not just stored MP3s but audio from radio aps)/phone calls/GPS directions. Don't need remote Pandora control, steering wheel control, or anything. I can make do on my phone if it's readily accessible (again in said mount). Just a simple deck with an Aux port and then a car lighter converter with a mount could do, but if I have to have cables, I'd like to keep it at one (ie charge and transfer via USB to the deck). Also I have to store/ take with me everything exposed since the car is parked outside in a city. Any Thoughts? Could be an older model that I could find used for cheap on Ebay. I'd like to keep this under $50 if I could get an old model or used.