Downloaded some maps, including:
- OSM (more trails than base map, 82 ft contours)
- NE Topo (no trails, 40 ft contours)
On a side note, I followed the prompts to download Garmin's updated USA map, and it's the best "included" map I've ever seen on a GPS: 100 ft contour lines, most trails, and very clean. I may end up just using it most of the time.