When travelling as staff I found the CX CC to be unrivalled in 5hithouse service, as a general rule. ( in Y that is, admittedly J was always quite good )
Try getting up to go to the loo as a staff traveller when some amateur has left the seatbelt on for hours in feeble turb....hello level 2.
I have found CX the worst for putting the seat belt sign on at the first ripple in their coffee and leaving it on, bar none. If you are going to do that then you can expect people to ignore the sign in lieu of bladder damage.