I replaced my Garmin 520 (which I really liked) since the battery would not stay charged. I also wanted better map capability since the 520 was not adequate. The 1030 battery is light years ahead of the 520. I'm not wild about the appearance of the 1030 since it is so much larger but the payoff is how much easier it is too read. The 1030 also manages my Bontrager ION front light. The 1030 is also giving me a lot more ride data. All in all I would buy this again.
Like the size, battery life, and menu selections, especially the ride history. However for the senior rider who needs reading glasses but doesn't like riding with them, the smaller display can be difficult to read.
This was a huge improvement over the original Garmin Cadence Sensor. Garmin got rid of the crank arm mounted magnet and the chain stay mounted sensor. It now comes in one neat unit that easily mounts on the crank arm. The worst thing i could say about this unit is that my Garmin Edge 800 takes a few seconds to find the cadence sensor.