Yeah economy class on a 747 sucks as much as it does on any other airliner.
And both B747 and A380 fly much calmer than the smaller, lighter widebodies, which is equally nice for passengers on all classes.
So far my personal favorite is the 787. About the only thing 'bad' I can say about it is that all the mechanical bits are kinda loud, like the flaps and stuff, and are very noisy inside the cabin. But it cruises so nice, and the lower pressurization altitude and increase in humidity is noticeable on a long flight.
The 787 is nice but I find the seat width quite cramped in economy, and unfortunately premium economy isn't great value either to pay or for points upgrade on any of the airlines I fly...
What’s even the point of flying if you can’t look at the world from up high?