The fam got me a Garmin 178C three years ago...
for my birthday. To finish out its operation I purchased a 32meg data card, data card reader and a second region of charts from e-bay. The two regions include 250 charts that cover most all PNW waters to the north end of Vancouver Island. They discontinued the 178C and now have their 400 series models, which are similar.I became a much happier sailor with this neat gizmo. It makes cruising a much more pleasant and safer experience. I still carry paper charts, but seldom use them; just for backup purposes. You can find some good deals through e-bay; I know I have.Installed everything myself with minimal tools. It was pretty easy to connect the 178C to our Autohelm 6000 (now Raymarine) head. Our boat came with a 7000 course computer, which follows the GPS instructions dead on. The only gripe that I have is a minor version conflict. Our 1991 Autohelm operates on NMEA version 1.X while the newer 2004 Garmin operates on NMEA version 3.X. Upon approaching a waypoint course change the system gives the alert, but when I acknowledge the system makes a one half mile arch to reach the new course. So, to speed things up all I do is make the course change manually. Again no big deal, otherwise the system is dead on and the chart detail is fantastic.The night before we set sail I program our route into the GPS at the nav station, then I track the route off line to make sure we've cleared all obstructions. During cruising I keep the GPS at the helm where everything is at my fingertips. Chart info, tide tables, marine services, etc. The GPS sounder feature even tells me the depth, water temp, fish and type of bottom.Our Garmin system is very reliable and available within your budget; just shop around. Get the color and sounder version, it is worth the extra money. Our model came with an external antenna; internal versions are also available.Terry