I ended up buying a Magellan 4040 GPS, as when I read some reviews on the tom toms, people complained they were not accurate, ie on the wrong side of street, wrong roads, etc. I suppose none are 100% accurate 100% of time. This one came with a usb cable, a/c adapter, 12v cigarette lighter plug, various mounts, and a storage bag. Some other units I looked at didnt have the accessories included like the a/c adaptor/battery charger or the 12v plug.
Anyway this is what I bought and should work fine in our van.