Thanks for your point of view. There are many posts on this topic. Those with RWD swear that the 704 sport suspension is the better way to go. I have a 535 X Drive, so the 704 suspension isn't available. I considered DHP, but in searching all of the dealerships in Canada at the end of 2013, I couldn't find one car in inventory so equipped.
There are some dealers in Canada that allow you to search their new car inventory. Calgary BMW has a dozen F10's in inventory and the last time I checked, not one was so equipped.
This begs the question: Is the option too expensive, or has BMW nailed the profile of its current customer base, who like a softer riding, smoother car as opposed to a "sports sedan". I would agree that a base 528 with its skinny steering wheel and extra light steering effort behaves somewhat like a Buick, but my 535 M Sport is far from that kind of drive.
I hope I have the opportunity to drive both cars with and without DHP. More important than the $3,500 for the DHP option is whether the car feels "right" with DHP or not. If it doesn't, I wouldn't want to be stuck with the option for 36 months.
