It's a good question. I can see the pictures on the product page (v.8), but I'd like to know:
1) how it looks on my device Taxtix Delta
2) What the contour interval is. This is the prinicpal thing I want to upgrade from the standard mapping. To be honest for open land navigation it's significantly poorer without decent relief, and contours are probably the best way of achieving this.
3) Why I can't get the OS mapping for my Tactix! And how the Top light compares to the OS mapping
I don't think the product pages answer this question, so in effect I'm taking a punt with my £20.00. Third party mapping sources usually put up an example from various devices. Shame Garmin don't do the same- I certainly feel like I've paid for a premium product in the device, so don't think this is unreasonable if they want me to fork out more money on add-ons!