It’s been surprisingly easy to knock up 100miles with the 810 and it’s already become a regular fixture on my bike.
I’m one of those people who doesn’t see the need to have mapping on a ride despite this the 810 has won me over and I do now use the maps. With a bigger screen, than the 500, you can get the info.
larger or have more of it, the touch screen works well even with most gloves.
I'm still figuring out the finer details but its quiet self explanatory so works well with a ?no manual' approach. My only gripe is with the visibility when the backlight isn't on the shiny surface acts like a mirror making it hard to read from some angles.