Well LX F is going to be better than LH J for sure. As for LH J vs LX J I think that’s pretty subjective, but most on this forum would contend that the latter is superior because some window seats have aisle access. I view them as essentially equal and don’t really care about aisle access, but again everyone values things differently.

Keep in mind on the return flight you’re going to want to go straight to bed, as it’s very late at night/early morning and you arrive early in the morning. Unless you choose to eat dinner, which would be strange but I see people do it, you won’t appreciate the food differences between F and J.

That’s why the flight to DEL is better for F, but that’s a day flight and you arrive late in the evening, so you can’t really sleep unless you want to be awake all night when you land in Delhi.

Sorry, just fretting about the LH/LX India schedule, which isn’t particularly great.