[Considered1]

After running an XC60 for 3 years with a lot of options my order of priority would be
1 On Call
2 BLIS

the one time you need them may save a life. My "moment" came in a downpour with next to zero visibility, when some prat was overtaking me on the inside as I was about to move in, if it wasnt for BLIS I would have been taken out as I couldnt see him but the radar picked him up, and a mulitiple motorway pileup would have been inevitable.