I would purely choose by travel time. QR might be better with inflight service, but the new AY seats are the best for sleeping on a plane in J class. QR suites way overrated and also to short to sleep good if you are tall.
I just did a long haul flight on AY and I did not touch any food outside the lounge, even if it was over 12 hours flight time - that's how much I like the food on board of AY planes. So the food would be the only thing make me choose QR - but then again I don t like it when the long haul flights is cut into two pieces, that only makes sense to me if traveling to Australia or New Zealand.