Have flown the 350 in Economy+ and Economy. The interior is the latest, similar to the updated 77W that they had on the MAN flights, not the ones presently used. The overheads seem to be bigger than the 77W and is certainly a lot quieter. It is not as quiet as the upstairs on the 380, but pretty close to downstairs. It reminds me of the 343 Celestar and 345 in terms of noise value on SQ.