I have been thinking about getting a portable GPS. (I read John Booth's article on how to choose the right GPS system, and found it very helpful. Thanks!) Costco is selling the Magellan Maestro 4040 for $299. On the web this unit sells for about $350 to $450. I like the fact that it has a massive AAA POI database, but I was originally planning to get a unit in the $200-$250 range, such as the Magellan RoadMate 2000. Do you think it is worth paying the extra $50 to get the Maestro 4040? Are there any other nav systems I should check out (keeping in mind my price range)?