Does anyone here know anything about these GPS systems for your car? I want a portable one that I can use in rental cars when I'm travelling.

I've bought two of them so far (they can be tested and returned). First I bought a Sony. I like the way it navigates, but it took me two hours to load the Canada map, and in doing so the US map was deleted. Also, the Canada map doesn't include addresses when you find a point of interest. The US map (before I deleted it) would give the address and phone number...a nice feature if you need to call a hotel for a reservation or something like that. The Canada map does not include this detail.

Tonight, I picked up a TomTom. I liked this one because it was a lot thinner, so easier to carry when travelling and to hide in my glove box when not in use. Same problem with the addresses on the point of interest, but in this case it doesn't give details for US or Canada. Also, the maps are on an SD card and not on a hard drive. What happens if the card becomes corrupted? I'm pretty sure this one is being returned.

Does anyone here own one of these things? Do you like it and, if so, what brand is it?

Thanks.