Cavortingcheetah,
Are you comparing Virgin Upper class with BA First?
As I understand it, the choice here is between BA club and virgin upper (as the two are more comparable in price). The only thing I can add is that if a person is big, then the virgin beds are better for sleeping - I find the BA club seats too short, when flat. But like many people point out, the experience often depends on the crew you get on the day.