I never liked it.
Done a few hauls across Mongolia in a 777; they bounced up and down like a pogo stick; and the innards were twisting completely out of shape on the run in and run out of Beijing.
I did the same trip on a 747, A330 and a A380, and it was buttery smooth each time.
Just booked a flight out there for December; KLM are flying 787's, but there isnt a good word anywhere for the seats; so I booked China Southern A330 flights instead.
BTW, discount time for Long Haul flights over Christmas has started; got mine for £334 each; BHX to NNG via CDG/AMS and PEK.