Wow. I'm using the Palm GPS Navigator package, and I absolutely love it. It's the reason I bought the Treo 650 in the first place. It works great. And I had no problem whatsoever installing the TOMTOM software using my Mac.
I'm not sure what this Missing Sync is... but I've been able to sync everything I need from my Calendar, AddressBook even music with no hassels.
Although I will agree that TOMTOM customer service is a bit on the wierd side. I've had all my questions answered pretty quick, but, I don't think the people that work there have actually looked at a map. I inquired about when they might add a map for Mexico. They responded that "sometime later this year we will be releasing South America maps...." So I wrote back about how great that was, and asked if that also meant that they were going to update the North America map to include Mexico and they responded, "We don't plan on updating the North America maps and that Mexico will never be a part of the North America maps."
I'm tempted to send them a map of North America just to see what they say. But I'm sure it's just the way build them....
Anyway, it's still a great product and I use it in all my travels.
EM