I installed the Garmin XT for external GPS 10 and it works like a charm! I suggest that this is easy to use in the car with the GPS 10 as an external device and I also use the TV out of the N95 to view it on a 7 inch TV/DVD screen! Excellent for long trips and no need to pay for the extra charges for the navigation since i have it on the Garmin! Never used Tom Tom so cannot compare, but I am quite happy with the new XT version of Garmin. Can be found here: https://buy.garmin.com/shop/store/downloadsDetails.jsp?id=3493&product=010-00579-00&cID=138&pID=420
greetings