Hi everyone... sorry if I am posting this in the wrong place, but didn't see a spot for it anywhere else. What types of GPS systems does everyone use for their car? I have tried the TomTom ONE and really liked it--- it was super easy to use and the maps were pretty accurate. I've also heard that the TomTom 720 has lots of cool features like Text-to-speech, but that its a little pricier. My parents are thinking about buying one so I wanted to get some more opinions. Thanks!!