I got a 6IV Japanese male Ralts with Memento over Wonder Trade O.O It's awesome for Masuda breeding, but unfortunately, its egg group isn't the best for it. Both Ralts lines rely on BW2 tutor moves, some of them like to be slow for Trick Room (Spiritomb, Cofagrigus, Reuniclus), and Trevenant really wants its hidden ability (which takes way longer to breed). Still, it's pretty amazing, and can be used to breed shiny Gengar, Jellicent, Chandelure, and Gourgeist with at least 5 IVs guaranteed, so yeah, pretty awesome.
I've gotten some other cool Masuda stuff too (female HA Eevee with perfect Def/SpAtk/SpDef/Speed and a 30 HP IV), as well as a shiny red Basculin from Unova that was caught in a Master Ball (lulz).