CX also had 3 ex-Air China A343s which were horrible to operate .. according to cabin crew. CX
retained the interior of 3 classes, but the F class was so inferior that CX
sold it as J class along with the main J class cabin. But the flat sleeper F seats were assigned to top Oneworld /Marco Polo passengers upon check-in only. I've sat on them before.. and as bad as it was, it was quite comfortable... just don't bank on watching any entertaining IFE's on them though.