I wasn't aware of this noise in particular, though I did drive both engines before deciding. In the end, I went with the better mileage.
I can't say I will even notice this noise after a few months. It isn't that bad.
At this point, the only things I think I might have gotten that I didn't are the better stereo and the telescoping steering wheel.
My impression of the XREAS suspension was that it was a lot stiffer. I am a rather mild driver anyway, so I preferred the calmer ride to the tighter handling. I ride a Yamaha sport bike for that sort of rush anyway.