This post gives you all the information you need to choose between the Garmin Edge 1030 vs 820 vs 520 Plus. First I have a chart that highlights the key differences between these 3 bike computers. Then I discuss these key differences. Then I offer some advice on which Garmin Edge to buy, based on your needs and preferences. Finally, I present a very extensive chart comparing all of the key features of all 3 bike computers, for those who want to know every single detail. I also include a useful Bottom Line that attempts to cut through all the technical details and simplify the choice, for those of you who are in a hurry!