I'm after something for the road bike. I'm not too fussed about bells and whistles, but I'd like a good, clear, navigation interface, so I can follow a route as easily as I follow (Google maps) satnav in the car. Ideally that would be on an OS 1:50k map.
Does such a thing exist? I've read very mixed reviews about Garmins and Wahoo, what else is around?