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Buyer's guides, information, and hardware reviews of popular receivers.
http://www.gps-gps-gps-gps.com/
Offers program to connect handheld GPS to PC. Allows the creation and edition of waypoints, tracklogs, routes, and allows to insert scanned images of map.
http://www.gpstm.com/
Information, software, and hardware reviews of name brand receivers.
http://www.gpsinformation.net/