Looking to book an economy flight into Sydney or Melbourne for my wife and myself, focusing on getting on a Qantas A380 flight as that seems to have the best reviews for flying in economy. The upper deck shows up as being held by Qantas for the most part so I have not been able to find a flight with two upper deck seats together (out of LAX/DFW/SFO). If I can't get on the upper deck, what would be the best place to book two seats together? Perhaps 79B with 80A?