Great points made by everyone in this thread. I've flown AF/LH/LX multiple times and want to add a few points:

1. I think AF Pajamas are the best. They are very stylish and made of great material.
2. AF Food is also the best IMO. Certainly at the CDG lounge, but also in-flight. LX dining is better than LH dining on the ground (even FCT), but I think LH has better in-flight food.
3. My seat ranking is: AF 77W > LX > LH 380 > LH 7478i > AF 380. I don't find the 77W claustrophobic, esp. when you have the cabin to yourself :-)

. I hate with LX/LH that you're left on your own basically. You can go to FCT in Fra but there's something ironic about leaving the airport and doing security again (albeit easy) for a different lounge.

If the timings work, I'd just go AF for the MQM and because the ground service at CDG is so, so nice. When flying F it's fun to "feel like a celebrity" and AF has the best experience there. You can't go wrong with any of them OP, have a great trip!