M_Boats: New questions on GPS

I like what I've heard about the Garmin units except that the Blue Chart CD is not Mac-compatible and I have a Mac. I'm also looking at a Magellan Meridian Color, because I can get a memory chip with Puget Sound charts as an add on, instead of a CD with one area unlocked. Any pros, cons to Magellan? I do not intend to sail outside the Puget Sound area but I would probably drive there and would like it to work. How big a hassle will it be if I have to take my Cd to someone else's PC and download my chart? Bobbie