I've had a full fare y-class seat on BA: DEN to LGW. The service was fine; the food simple, yet edible and the seats were comfortable enough. If you can change your plans, I would recommend flying HOME in Club World. I know for me, I would rather put up with economy on the way over, and look forward to flying Club on the way home. It's kind of like first owning a BMW and then selling it and buying a Toyota. You see what I mean. I'd rather first drive the Toyota and look forward to my ride in the BMW rather than vice versa.
Just my opinion...and I'm not saying Toyota cars are bad...simply an analogy.
I love America. I guess that makes me Bush's poodle, but I'd rather be a dog in New York City than a prince in Riyadh.