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Where's the best place to level, post game?
I've been using the 3* restaurant rotation battles to piggyback lower level pokemon (so they get full xp, even though I never rotate them in), but it'd be cool if there was a better place once they got to a higher level. BW2 spoiled me with that amazing treehollow training spot and join avenue instant levels. That manor place with titles might work, but I don't think there'd be enough trainer flow to really do a significant amount of training.