Here are the maps with MetroGuide maps loaded in.

at the 2 mile resolution. Notice it will show some more roads and the map of the lake is much more detailed.

and at the .5 mile resolution.

And finally at 800 feet resolution.
The display for the 76CSx will be identical, just a larger screen
You can declutter the map if you want. At the .5 mile resolution with max resolution, it will show almost every street. Notice how that US 76 is now much more smooth and will be really close to accurate now.