Given your confusion, it seems like my posting on Saturday afternoon was justified .. I spotted the awful editorial / QA error in their article too :
What Car in the UK - Group Test - 5-er wins - but horrendous editorial / test error
BTW I have the 520d M Sport , Sports Auto on the standard 18" rims and no VDC. Average pot holes are fine for me - no particular discomfort. I slow down / avoid hitting the deeper ones (as I am sure most people do).
You are opting for ther 19" rims, so will be different for you, but throwing in my 2p worth anyway.
Personally speaking, if I were in your shoes, I would go for the sun roof, as I think I would get most benefit from this. When I drive my gf's 4x4, I love having the roof right back. I wish I had spec'd this on my 5-er now. Oh well!
Cheers.