Which brand do you prefer?  The pumpkin and Eonon units seem to be very similar, but there is about a £50 price difference.   What seems to be the preferred unit?   http://www.eonon.co.uk/Android-Car-GPS/GA5153F.html   http://www.autopumpkin.co.uk/pumpkin-android-quad-core-car-radio/pumpkin-android-quad-core-vw-car-radio/pumpkin-quad-core-8-inch-flush-panel-pure-android-4-4-kitkat-plug-and-play-car-stereo-gps-navigation-system-for-vw-skoda-seat-support-obd2-air-play-3g-wifi-canbus-7-.html