Sample of  Maps  by Various Vendors
Screen captures are from an area west of San Jose, CA
(Most maps and information supplied by John Galvin)
 
Lowrance City Streets (1) Tiger Census Map (2) MS  Streeets 98 (3)
Street Atlas 3 (4) Garmin Roads & Recreation (5) Street Atlas 6/7 (6)
Street Finder (7)
 		Garmin MetroGuide (8) ETAK Skymap 2000 (9)
 
Thomas Brothers (10)
Garmin USA Topo (11)
 		 

(1)  Can be uploaded to Lowrance GM-100 (and others); has no real-time tracking or data transfer
(2)  Has no GPS capability
(3)  Supports real-time NMEA tracking, but no data transfer (Streets 2000 has no GPS capability)
(4)  Supports real-time tracking, but no data transfer capability
(5)  Can be uploaded to Garmins, has data transfer (with Garmins), but no real-time tracking
(6)  Supports real-time tracking and limited data transfer with Garmin, Magellan, and Lowrance
(7)  Supports real-time tracking including ETAK Skymap (Pro)
(8)  Can be uploaded to Garmins, has data transfer (with Garmins), but no real-time tracking
(9)  Supports real-time tracking from ETAK receivers only
(10) Has no GPS capability
(11) Can be uploaded to Garmins, has data transfer (with Garmins), but no real-time tracking
 
Jack Yeazel