Just based on where I'm from and where I go for work, I almost always am on Delta or Air France, but I've never gotten a bed like that. Is that what BA flies?

In any event, the flight times from the US to Europe can be overnight so sleeping is done, but the flights from Europe to the US tend to be too early in the day for me to get sleep. So that sleep advantage is really a one way bonus imo.

Obviously neither of us will convince the other: you may have more miles/have more money than me, which skews our perspectives.