I flew SFO - SYD in the UD of a United 747. It was like flying on a cloud. Our FA (28 years of experience) was brilliant, brilliant, brilliant, and took wonderful care of all of us. It was a night flight, pretty much everyone in the UD knew how to be comfortable and not disturb others. Most everyone except the FA slept through much of the flight, although some watched movies or read, but the light from the IFE and reading lights wasn't intrusive. It was much quieter and relaxed up there. I think I slept for a solid 8 hours, which I can rarely even do at home. (Notice I am posting at 5:00 am!)

The SYD - SFO flight, with a similarly experienced FA was nice, but not as nice as the SFO - SYD experience. That first FA really made the difference. I've flown international biz a number of times, but this flight was the closest I've come to international first. I cannot praise that first FA enough, but he spoiled me for my future travels.