New to the forum - hello... Looking to buy an M4 CP Cab imminently - however struggling to find the right car with the right options for my budget. I have a couple deals on the table, however each car is missing something! A main dealer has a car advertised at the moment which ticks all of my boxes (including price with a bit more negotiation), apart from the HUD and Air Collar. HUD - I have this on the X5 and whilst its OK, I could live without it. Does the extra M styling of the M4's HUD make this a "must have"? One of my thoughts is that I wear sunglasses when driving for a large part of the year and with these the HUD is not visible anyway? Air Collar - On a recent test drive (in the cold, wearing a jumper) I didn't even notice it was on? From your experience is the Air Collar worthwhile, does it make a notable difference? Thanks for your help in advance.