Thanks for the update.
IIRC, when you initially got it, you were a little uneasy about the the higher RPMs that this engine turned, especially when accelerating. Did you get used to it by now? I guess you must have, or else you would have sold the car.

I personally don't mind the higher rpms, but given the choice, I'd prefer a lower revving engine that could effortlessly accelerate without having to dip into the high rpms. Wife's Q5 is a lot better in that respect than my 530i. Her Q5 will also cruise at 75 mph with rpms still below 2k, while my 530i is around 3k rpm at that speed, but that's mostly because it's manual.