I guess I am the one not making myself clear. If I buy a Garmin, and buy the Blue Chart CD, I have to use someone else's PC to transfer the maps to the Garmin unit. My CD, my chart, my GPS, just not my own computer because I have a Mac. Also, I just learned from reading that when I load the charts from Blue Chart, it erases the original loaded maps, so I have to go back to the friend's computer to download those again from Garmin. That sounds like a major headache. If I buy a Magellan, I can buy the charts for Puget sound on an SD memory chip that goes directly into my GPS. (Only apparently the one I was looking at has been discontinued.) This bypasses the computer problem. This sounds like a much better bet (except for the discontinuation problem.) I just want to know if people have used the Magellan, whether there are disadvantages to it. (From what I've read, if I go color, the battery burns up faster.) Bobbie