Originally Posted by Moabite
The factory nav systems are great for mall crawlers, but they suck for off-roading. A dedicated GPS like the Garmin Montana 600 is far, far better. There are numerous mounting options in a vehicle, and you can take it with you if you are fit enough to hike.
I agree, these GPS units from the factory suck if you truely off road.
What hasn't been talked about is the cost to update your 430/730 maps. Garmin updates maps 4 times a year and I have lifetime updates (free) for my external GPS. I believe it costs about $70-$80 each time you want an update for your 430/730 and you have to bring your Jeep in. I just update my GPS from my computer at home, for free.
Also, I like to go off-roading a lot. That's why I bought my Jeep. I have books (i.e. from Charles Wells) that have backroads & 4-Wheel Drive Trails (CO, CA, AZ, MT, WY) that have GPS coordinates in them. I believe you can not just input GPS coordinates directly into the units, you would have to create a custom POI (CSV file), put it on a thumb drive, plug it in and then let the 430 read it in. Oh, you would have to convert the coordinates to decimal format before creating the POI. A lot of work.
Yes, some of the maps on your 430 will show forest roads, but not all of them. I was just up in Flagstaff, running the back FR roads. Even my external Garmin GPS had some of the roads ending when they didn't. I talked to a forest ranger and they gave me a map showing all the roads. They also showed me on the map where I could go online and download the 2013 FR roads for that area directly to my GPS. I did when I got home, went back up there, and everything was there. You can't do that on your 430.
Also, there are other ways to mount your external GPS, it doesn't have to go on the window. There are mounts for just about anywhere.