Good point, but it's nowhere near as bad as it sounds ie. it reconnects instantly, so you just get a pop up warning, maybe once or twice on a century ride. Some of my other sensors momentarily lose connection, but they don't give a warning because they are not safety critical like the radar/light.

My main issue with Garmin is their UI. I use an Edge 530 and once they solved the mid-ride freezing issue (a major issue) on its release it has actually been very reliable for 3 years. But I just don't like the UI embedded menus as they are not very intuitive if you need to change anything. But on a daily basis it is fine and I like the route navigation.