I just got a Garmin 62s bundle and I am wondering if I should return it for the 62st. Apparently the difference is the 62s comes with one free 24k download which only includes 3 to 4 state regions where the 62st comes included with a 100k topo map of the whole United States. My experience with the 100k map tells me that it is plenty detailed but I have never seen the 24k maps. Can anybody tell me if it is that much better? What shows up on 24k that doesn't show up on 100k? Any opinions out there?