need recommendation for handheld gps for marine use
i would like a recommendation for a new handheld gps, for use in south florida keys and bahamas. i would like to import gpx waypoint files and export as well to a ray marine c120. i would like lots of memory and solid lighting for night time usage. i would also like a trip planner for bahamas and marquesas. wireless information transfer ability of location easy way to mark fishing spots for trips. question, how long should i expect to be able to use this device? power alternatives to batteries? can i expect have power cable option as well?