The Concorde Room is very nice, but not, in my opinion, in a league of its own. It can be crowded at peak times, the seating does not make best use of the considerable space, food is only average and service very spotty. Cabanas are getting tatty and are very noisy sometimes. There is often an air of total lack of enthusiasm to the whole affair. For WOW factor, QF Sydney First lounge is still tops, though service there also can be iffy. JAL First lounge in Narita I find extremely pleasant from the food and service point of view and for me this makes up for other shortcomings.