Just made a round trip at the front of the plane... F cabin BKK-SYD was wonderful. Service was impeccable, the Dom kept nicely chilled and the food was excellent.
C cabin on the way from BNE to BKK (on a 787), was almost disappointing. The new entertainment console touch screen controls are much too finicky, but the real disappointment was the wine which flowed like glue (seriously: one little taster for the second meal), and there were no slippers. I love being able to kick my shoes off and don some slippers (I travel with a shoe bag just for this very purpose). Maybe I was just spoiled in F. :P