Originally posted by: rh71
I've used the PDA types in the past and would rather avoid them because of what you said - the size restriction.
With the Garmin products, is it a one-time purchase deal? Meaning... I just have to buy it and it'll work/update via satellite each time without doing anything with/for it ever again ? I'm in NY, but would I be able to bring it over to LV/LA - pop it on and I'm good to go ?
The Garmin came with a CD that included maps for the entire US. For Mapopolis, you can go to their website and download all the maps you want.
And like 0roo0roo said, DVD is the best but you really are going to pay if you want a DVD based system. My MDX had a DVD nav system option which is supposedly the best one you can get but for $3K, I didn't think it was worth it.
So far the best system I have used, and I haven't used too many, is the Neverlost system that Hertz has in their cars. You can buy them on Ebay but they are very expensive. I think they go for around $1500.
What it boils down to really is a compromise. You can get a really good GPS for big bucks or settle for some quirks and annoyances with cheaper systems. For me, the Holux/Mapopolis combo was a good compromise because I don't really use the GPS that much but I do use my PDA. The map loading is a real problem if you use the GPS all the time so I wouldn't recommend it if you are going to be a heavy user.
On the Garmin question, you can't just take the SP3 to LV or LA and expect it to work. It comes with a 128MB proprietary flash card that must be loaded with maps in order for it to work. The GPS has a serial card reader that you use to program the card with. I believe it can hold around 10 states depending on how dense the states are. I live in NJ and I can only hold 4 states.
Living in NYC and going to LA, I don't know if the Garmin would be a good choice since it doesn't have a gyroscope. The really good systems include a gyroscope to help navigate when the system loses satellite tracking. In NYC, I know you will lose track often because of the tall buildings. The Garmin is really slow to track too so it may not be a good choice. The Holux system tracks very well though. After going through a tunnel, it was able to track in 1-3 seconds and it can start tracking from a cold start in less than 20 secs. The Garmin took like 3 mins from a cold start.