I recently got a
TomTom XL 325, which is intended to be a car navigation unit. BTW, it's on an Amazon Gold Box deal today for $90. It was $150 yesterday.
I don't actually use it for car navigation. Instead, I use it for hiking. I wrote up a review at Amazon (
here) and posted some images (can see those on the main link above) for more details. In summary, though, you can load your own aerial photos onto the map, the screen is nice and large at 4.3", and it typically achieves sufficient satellite lock in about ten seconds. I was thrilled when I was walking with Niki at the nearby state park and could watch our progress on a satellite image from Google Earth that I had put on there (that's what's in the pictures that I put up on Amazon). Granted, it's more of a fair-weather hiking system because it's not intended to be weather-resistant like a real hiking GPS, but it also costs a lot less than any of the hiking GPS units that I've seen with touch screens and the ability to overlay map images.
I wanted to mention it as a concept because I don't know how many people think to use them that way, and at today's price of $90, it's a good deal (IMO). I don't know about other car systems and how well they work for this.
Anyone else here use car systems for hiking and care to discuss your experiences?
Anyone have a dedicated hiking GPS and care to discuss why I might want to pony up the cash for one of those? If it's worth it, I'd sure consider it. I'm just very happy with this TomTom right now.