CX，VS，QF 邊間服務好d呀???

Depending on what you are actually looking for... Personally feeling is Cathay Pacific then follow by Virgin Atlantic and finaly Qantas...
In term of crew services, both Cathay Pacific and Virgin Atlantic have pretty nice crew in my experience...
While in term of meals, Cathay Pacific and Qantas are better than Virgin Atlantic...
For seat wise, Cathay Pacific and Qantas are actually better than Virgin Atlantic...
For inflight entertianment, Virgin Atlantic is the best with a huge number of movie to choose from while Cathay Pacific movie selection only has 16 but quite a few are chinese movie... So Qantas is the worse of inflight entertainment...
For aircraft condition, both Virgin Atlantic and Cathay Pacific operate pretty new aircraft compare to much older by Qantas...
So depending on what you are looking for... But personally I would choose either Cathay Pacific and Virgin Atlantic before Qantas...

I have been on 3 of those airline to sydney. I rackon cx is the best and the following is qantas. if you like more hong kong feel, go on cx. if you wanna watch more western movie and music, go on qantas. i think cx flight time is more fit for us. The worse is VS, always delay and the food taste like crap and the seat is too small. When i go bak to hong kong in december last year, my friend go on VS and i go on CX, the schdule said VS is 15 min earlier to take off but after i arrive to HK, i am like 30 minutes earlier.