Is this yet more extras for the impending SL?
Tracker is pretty useless. Limited number of places you can fit it, so it is easy to find. Many insurance companies don't require it. And you have to pay an annual subscription. Better to spend it on the car IMO.
I have the Garmin Speed Camera detector and am delighted with it. Halfords said it is a lot more reliable than TomTom. Garmin make lots of aero stuff. Top quality. Remarkably cheap nowadays. Does SatNav too of course and I have found it better than COMAND. And you can update a lot of it for free and other bits (like safety camera updates every week) for a modest annual sub. With COMAND you need a new disc every year for £250. And it does not do cameras of course.