Flying on a short 2.5hr flight from HKG to PVG on 16th January, unsure whether to book CX PE on the 777-300er or China Eastern Business on an a320 or a321. Both the same price, newly joined QFF so still bronze not going to make silver until April regardless of if I take the CX flight. Anyone had any experience with either???? .....

Dilemma
CX PE: $440 not the best flight time
CX Y: $390 better flight times(on a320/a330 so no PE)
MU J: same flight times as CX Y also $440

Thanks, any advice appreciated