- CX F is 1-1-1 with wider, more spacious seats.
- JL F is 1-2-1 with narrower seats.
If you are traveling with someone, JL center seats are nice.
- In my opinion, CX has some of the nicest, most comfy bed linens in F, and very comfy and stylish PJs (organic cotton).
- JL has a memory foam pad that is quite nice (and you can choose the firmer or softer side) but their PJs look like track/jogging suits and are very warm.
- JL has Queen of Tea iced tea available in F.
- JL has free Wi-Fi in F.
- JL has Toto Washlets in F (and J). Personally, I poop in my hotel room bathroom before showering and heading to the airport, but for those who do such things on the plane, this is an awesome advantage.
To sum it up, I'd say you won't go wrong either way. I might opt for whichever one is a longer flight (more time to enjoy it). If the flight times are close and I'm solo, I'd go with CX, if with someone I'd go JL.