I'm still looking for my next car. Eyes set on a 2011-2013 335is w/ DCT. I asked my dealer to help me with the search and through their dealer-trade network he found me a 2011 model with ~40k miles and DCT, but almost no other nicety. No heated seats, no Nav/iDrive. Both I have currently in my 07 335i.
So, to the point of my post: Have you ever gone from a car with a fancy in-car navigation/entertainment system to one without? And if so did you regret it?
I have a smartphone. I could just use that to replace the navigation but for both convenience and maybe some vanity reasons I think I would miss the in-car navigation. I would definitely miss the heated seats in the winter time.