Originally Posted by
Leverage
I flew J in May JFK->CAN->JFK and it was perfectly fine. In terms of soft product, it's below the Korean / Japanese airlines, but on par with US airlines (outside of English not being great). Just get a window seat and it'll be fine.
I haven't flown F with CZ, but with mainland Chinese airlines I can't imagine they being a huge improvement from J to F.
Based on what I'm reading it's what the consensus is. Trying yo justify it for myself as I like to try different First class cabins but also think it may not be worth it. Only differentiator appears to be the seat.