* What GPS setup are you currently using for Offroad Navigation....? Onroad / Offroad is a Garmin GPSMAP 76CSx, no external aerial, but suction-cup mount on windscreen and 12V power adapter to save on batteries when ignition on. I have Australian City Navigator routing software installed for on-road use. Also have used Metroguide (non-routing ) and have some topo maps somewhere, not used yet. You can load thousands of points of interest too and all are searchable by name, database and nearest.
* Can you perform 'Trip plotting' (Waypoint markers to record your movements)...? Yes, up to 10,000 track points and 1000 user waypoints.
* Can you save these 'Journeys' for future reference...? Heck yes. Using Garmin Mapsource program. I have several data files keeping all my tracks, waypoints etc. There are a few other softwares that will do the same. Tracks also stores as gpx format on data card.
* What display system do you have....? (Handheld, In-dash TV, plugin Laptop PC etc) It is a large format handheld. I can plug into laptop if required, but not done that as yet.
* What Make / Model is it.....? Garmin GPSMAP 76Csx (actually comes out of Garmin's marine unit line so it floats!) link:
https://buy.garmin.com/shop/shop.do?cID=161&pID=351
* Would you recommend it to another Offroader.....? Absolutely. It has a quad-helix antenna built in which is much better in poor satellite conditions (under canopy/trees /buildings, canyons etc.) than many other units, it's also great for working out of the vehicle where some onroad-dedicated GPS units fall down. It has a good battery life and main housing is waterproof and floats. Can track and view altitude changes as well.
* Roughly how much did it COST.....? AU$500 bought off internet from US (so has US basemaps in it) Was around AU$800+ here at same time (April 2007).
* Limitations: really would like facility to have more than 1000 waypoints, rubber seal on power adapter cover needs to be more durable. Alarm tones could be louder / adjustable volume