Ah, I see now, when I went on their website before, it brought me only to a special offers page.
I have the TomTom one. My brother and I got them as gifts for Christmas. They are alright, but TomTom wouldn't have been my first choice if I was buying one.
Some of the screens are kind of annoying, as in you have to go a million different places just to say "stop navigating." The voices are somewhat annoying after a while, because basically every one has an accent. They advertise you can get Burt Reynolds and a few others, but its $10 for a single voice.
Both my brother and I have absolutely no battery life. As in if we leave it plugged in for hours, we unplug it, then go to turn it on next time we use it, it has to be plugged in or else it won't turn on. This has happened since the first time we used them.