I am one of those folks who was hanging on for a M3 but got sold into a MS60. Price was right ( a mear $50K) , timing was perfect (now). I now drive it with incredible pride of ownership - however.
Within days of getting my car, they discontinued the color (just made it under the wire)
Within days, they announced AP2 hardware (oh, if only I had waited just a few days and got to the other side of the wire).
Several months later - I see my autopilot remains more advanced than what I could have bought.
Why did they make the offer of a 60 battery? I got a 75 at a $10,000 discount. [could it really be true that many M60 buyers are upgrading to 75 functions]
There are so many levels of decisions - clear inventory of obsolete paint; clear inventory of AP1 cars; boost end of Q3 sales; convert M3 reservation holders into MS owners.
Are they giving good customer service? are they "manipulating" their buyers (like me). Are they playing a great game of chess?
I am happy with my purchase, glad I jumped in when I did. would also have been happy if I delayed the decision. [now that I said that, I don't believe it-- I am too happy now and can't see me being this happy if I was still driving my old sled.]
My advice - jump when you are ready, don't wait for a greener pasture - it will always be greener tomorrow and you may miss the boat (or simply DIE) while waiting.