Anyone on here have a need to use topographic maps on their Mac frequently? Do you have a favorite package that you use? Why is it your favorite? Have you tried others? I've just recently switched from a Windows based PC over to an iMac. On the Windows PC, I used Delorme's TopoUSA which I liked quite a bit. I've done some searching around the 'net with Google and have run across a few available packages but it's always nice to hear from someone that's actually used them before making a purchase. Thanks in advance.