Originally Posted by Polaris OBark

Garmin also sells a radar-specific head unit for about $100. For me it was an easy choice to get the Garmin Edge 25 at the time (then the 130, then the 530). They don't make the 25 any more, but the 130 plus can still be had, and is a nice small minimalistic Garmin Edge with nearly all of the basic functionality one could want, apart from colored maps.