My vote would also be for QF. Apart from the superior config on that route and the better catering, I've always preferred the more casual style of service on QF. I find the QF crews very charming, and CX crews rather cold in comparison.

Plus champagne-wise, Lanson and Charles Heidsieck MEC are both far superior to Deutz. Unless CX serves Billecart-Salmon on that flight?