I just got back from a trip on a 32M, 32S, and 3NS.
On the 32S I enjoyed listening to XM radio while watching the map, until my school's football game started. I didn't watch the entire thing as we were destroyed

but I could at least revert back to the XM radio and the map.
On the 3NS I just watched the map with no sound and did some work on my phone. I also took a nap. The screen on the NEO is nice and big, but music would have been nice.
-J.