While I like the B747, I personally rather fly on a B787. Was lucky enough to fly SYD to SCL on
VH-OEG, which wasn't a bad flight but I've noticed both United (when they had the B747) and Qantas tend to have the cabin temperature quite chilly, maybe a B747 thing?
Flight back was on
CC-BGH, liked the lighting, the window (where you can tint it to be dark) and the cabin temperature was more comfortable. Only downside with the window is the rainbow (not sure if the correct term) effect.
Rainbow effect