I think that the upper deck seats are some of the best in economy. VERY spacious compared to other OZ planes for sure. I only flew from HKG to ICN so it was a short flight, but I prefered the "small cabin feel." With cabins being squeezed for space these days, I think the two seats together with such space and a new cabin are a very welcome change.
Those side bins do get stuck when you try to open them though. It requires some magic skill and patience :-).