Well you can still get a LOT of maps on there. It's over a thousand segments (can't remember exact number right now). The top maps cover less area per segment, so they are the "segment hogs".

They may also have updated the firmware and removed this restriction. I haven't checked lately.

Note also be careful with the little button on the unit. I used to just throw mine in my pack and bash it around. At some point the little rubber coating ripped on the button. It still works, but I assume that hoses the water resistance. It isn't really a fault, I was pretty rough on it, but no sense making my mistake.

-john