Took EK 777 from Glasgow->Sydney in January.
Glasgow->Dubai leg was supremely comfortable, decent pitch and quite relaxing ambience, except for the 4 drunk idiots who ended up restrained at the back screaming at the flight attendends and arrested on touchdown in Dubai
Dubai->Sydney leg had us jammed in like sardines and was as bad as I expected the long-haul part to be.
Unknown what model of 777 on each leg, but was chalk and cheese.
On balance I'd do it again but only because it's the only route home with a single stop.... and that stop is only an hour.