Hi, I’m a bit at a loss. Find a car radio with hands-free, Bluetooth and the most convenient use via iPhone without cable (Navi, music) up to 100€. Perfect would be if the device were optically as discreet as possible! Have encountered the following devices:JVC KD-X50BT JVC KD-X250BT (successor?)JVC KD-R741BTE Does all not seem to offer an app for iPhone but only for Android? That would be a disadvantage as I use an iPhone 5. I also see the difference between the devices ni cht.Sony MEXBT3100U Supposedly no good voice quality via hands-free device? Can anyone explain the differences to me or recommend another device? I don’t like bad hands-free device or missing iPhone compatibility. In addition, all 4 are “bunt”, I’m looking for something simple. Mfg