I ended up buying it. I like the topo map feature. I just wish someone would come out with onboard maps. Sometimes I hike where there is no cell coverage, and I don't have any maps to go by. GPSkit is still pretty good though.
Yes I am sure you know that now they do cache maps - not as good as just having all the maps on the phone but a lot less space used this way.
Also I would like to mention in the latest version there is an Easter Egg that is quite cool, but am still waiting to know if they want me to post about it on the web or not - guess it will have to wait.