There are 2 types of A-340s used by CX. 3 of the fleet are rejects from one of the Chinese Airlines (CA or China Southern, IIRC). These a/c do have "first" class seating in the first 2 rows but they're offered as J/C seats. Little difference except for leg rest and seat pitch. Get the first 2 rows if possible. The a/c are not that well maintained inside. I flew one HKG-BKK last year.