I have an upcoming trip to Shanghai and returning from Hong Kong. I'll be flying from DUS and will have a choice of either Finnair via HEL or BA via LHR. Sadly I'll be in Y but will be looking for reasonably priced airport upgrades (I have a BA silver card). So, which would you choose? Finnair on the A350 both ways, or BA on a 777-200 outbound and A380 or 777-300 on the return?