What about a United 747 from SFO? The 777s out of ORD are the old crappy 150 degree seats whereas the 747s have all been retrofitted with nice bed-seats. It's certainly not bad but it's not a great product either. F&B aside, I've been perfectly happy flying on the 777 exit row to PEK as I have in the C cabin.

I can't speak for the other carriers' products as I haven't flown them. I have on multiple occasions heard that the Air China TPAC product isn't half bad. I've only flown them domestically, though and that's a different experience I hope.