For anyone looking for a basic review: I used the XT for a 2 day trip through the Canadian Rockies last weekend and coming from a Montana 610, I can tell you the user interface, display and overall experience make the Montana seem like a bit of a brick. (I know the Montana is awesome for some other applications). I could never get used to the small and dull display of the Montana or the tiny on screen buttons I always missed with my gloves on. The Zumo XT is really superior for me in every way. Angle it up and it is really easy to see if you are on the right track with a quick glance down while standing. Also this is the first Bluetooth GPS I have had and I love how it warns me on screen and in ear of speed and red light cameras.