As the trip reports for this configuration are still few and far between, thought I'd ask what people's thoughts were on the new PE cabins and which seats they'd choose.
I would choose 17/18 AC, have also flown in 15HK also, and parents in 16HK.
I'm a fan of the AC side myself, and unless your party size dictates, the twos are good, plus being slightly towards the rear of the cabin, you position yourself well for being some of the first people off the a/c but not to far down that you run the risk of ay meal choices running out (although this can happen wherever you are sat to be honest).