Bump on this old thread. Just replaced my 130 (did a battery replacement which has failed after a month – I’m guessing soldered wires maybe broke but I’d siliconed the front back on so it was a one time repair).
New 530 is really impressive – there are a lot of nice new features though main attraction was the battery life.
however, it looks a lot bigger and more vulnerable on the Garmin mtb mount in front of the bars. with the 130 that felt safe to me – it’s generally a well protected area and dont’ hit with your kneed in an OTB or side fall, and in a frontal knock I’d got it loose enough that the mount rotated up or down on it’s hinge. The 530 is a bit too big for that to work.
I think anything above the stem is too vulnerable.