I have flown QF 128 Hong Kong - Sydney on the leased BA Aircraft, and to tell you the truth it was one of the worst flights ive ever had!
The seats were diabolical, the food was crap, the entertainment was a couple of TV screens for the whole economy cabin. And the seat layout was realy weired! I had a exit row seat, 46B, this was nice due to the 6 odd foot of legroom, and on the way back i was 44E, which had no legroom at all. What a dam ugly plane as well, those colours are disgusting!
That's one of the wrst world colours schemes i've seen. Why doesn't qantas wet lease the plane, or at least upgrade the seating in it. When i walked through the Business class cabin the seating looked pretty boreing. Sorry to diapoint but if you had any sense i'd take Cathay Pacific, there business class kicks!
Even though it will probebley be a A340 it's still very nice and better than the BA/QF hybrid opperating on this route.
Hopefuly you havn't booked yourself on this bird, you might get lucky and get a real QF plane!
Let me know.,