On the A380 the J product is pretty good imo. I would think F on the A380 would be better than J on the 787, but by how much is the question. If QANTAS wishes to persist with the F product on the A380 they will need to raise the bar in some way especially if refurbishment of the A380s means direct aisle access for all travelling J.The new J suite is so good you don't need an upgrade.