I got the nice one on a Canada-Europe J trip and the not-so-nice one on the return and I assumed it was because most trips are return, you don't use that stuff up on a single flight, so on the way home they just top you up with the minimums. (Not so nice is maybe unfair, I actually keep the toothpaste and brush, in the little plastic thing, at the bottom of my regular briefcase/bag for emergencies.) I am pretty sure both flights were overnight. The socks from those kits are among my favourites, though I like the Luthansa socks even better. My children will steal my "plane socks" given half the chance.