What's your budget? If you have a Palm or Pocket PC with bluetooth you can utilize it with a separate bluetooth piece which receives the satellite signal and passes it along to your Palm or Pocket PC. Here is a good website with a forum with all kinds of good research:
Not going to say that the Tom tom is a bad unit but when I was at circuit city looking at them I did a test from my circuit city to my house and when I was to take a left the unit told me to take a right. The screen even showed it turning left. Just a buyer beware.
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