I guess I have been spoiled with the Tom Tom but the XF system does the job also has traffic warnings and gives alternative routes to avoid delays etc.
I tend to just use the voice guidance which works well and lessens the distraction of looking at the display.
Just used to like the route options on the Tom Tom ,if not in a hurry I would use the shortest route option which would use all the country lanes and often roads I wouldn't think of taking without it.Found some lovely roads and villages using it.
The other function I miss is the lane guidance which gives useful information in complicated junctions and intersections,there is a pop up view on the xf but it just clutters up the screen and causes confusion.
The car is far too much fun to worry about the "toys " anyhow.