Flew back from Beijing to KL on a very early morning flight (3am) May 2014. The difference in price between Premium economy and economy in this case was not big. Found the seats very adjustable and better than QF business class seats which I flew SIN-MEL a couple of nights later. There's a separate egress and exit so you don't have the economy people walking through. Can't remember IFE or food. There was a crying baby next to me, I got the impression that a few families with say one child, the husband would fly economy and the wife and child premium economy. "Great" I thought, had been looking forward to this for months and I get a crying baby. Had a word with the female FA, she saw another woman with a child on the other side of the PE area, spoke with here, moved me over there and the 2 women together. Explained this worked very well as one could look after the others child if they need to go to bathroom, etc. This FA handled this situation with real aplomb. Suspect with many carriers that you'd have just been stuck!