First off, I got my F30 before the dealers were willing to do the re-code. In that time, I think I consciously tried it out all of 2 or 3 times (and a few other times, forgot to manually turn it off while starting the car). I hated it.
As soon as the dealers were offering the PuMA for the recode, I made an appointment. I think was the first to do so at my dealer (and I think I was also the one who told my CA about it. He wasn't aware of it).
And the beauty is, at 'remember last value' I could, in theory, turn it back on. So no harm, no foul.
The one thing I really want to get coded is to nix the warning message. Hate the seat belt beeping (I wear my seat belt, but sometimes it takes me a minute or so to put it on), but even more so, on the parking assist cameras, the damn warning covers up the camera view of front of the car).