Cant go wrong with either
Its the one route where I can never quite decide between QF and CX in J. Both are excellent.
I tend to go for QF because I prefer the seats (if an overnighter) and because it makes a change from nearly always flying CX. I also like the do it yourself bar concept as well.
As for AVOD on QF in February worked fine on an A330-300. My only comment being QF and CX must source it from the same place as the English Channels for both TV and Radio were eerily similar. I even asked the Purser!
One thing you may consider I have a suspicion the Business Class FA's on Qantas are moonlighting from their regular somelier jobs. They tend to be very knowledgeble regarding Aussie wines!