Can I highly recommend Stagecoach (no. 10) as a brilliant Western, I am not too sure about the Man from Laramie however...
Highly disappointingly, George Steven's Shane (1953) has not made the list. This is by far and away the best Western I have seen. If you have not seen Shane, what are you waiting for - go get a slice of American history!
The full list is HERE.
Comment if you have any other good recommendations.