BA's Club World is by far the best of the current names. It is simple, accurate and straight-to-the-point.
IMO TWA's Ambassador Class was the best ever, but sadly this brilliant airline is conveyed to the history books.
Upper Class is by far the worst, as I feel it is just a cheap and tacky gimmick, just like VS
MOL on SRB's latest attack at BA: "It's like a little Chihuahua barking at a dying Labrador. Nobody cares."