Originally Posted by Christopher There are no monthly fees.

Shh... Keep quiet about that. I personally am shocked that they have not found a way to charge for it yet.
According to what I have read, if you want to go with a GPS for your Treo, the only one really to consider is that TomTom one. It seems to be a pain to install but it also seems to be the fan favorite around most boards.
All I really remember is that they made 2 different receivers. One is more up to date and it seemed most had better responses with it. If you look in the bluetooth forums on the main boards you will find a ton of info.