If you use a lap top on the job this, co-pilot softwhere is around $150. Reciever around $75. And you can program in multi destinations http://www.gps-planet.com/cotrgpssy.html Cheaper than Garmin, but they are good also.
God is great, beer is good, and people are crazy.
This is CABL.com posting #333720. Tiny Link: cabl.co/mbyYK