Pokémon information from here, Nintendo from Nintendo Life. And some nitpickings from Nintendo Power.
EDIT: Oh, you asked why. PokéBeach provides very fast translations, and there's always that WPM touch. Nintendo Life has reviews of every DSiWare, WiiWare and VC game available, and provide very fast news, like how the Donkey Kong record was just broken again. And Nintendo Power provides exclusive interviews, expected features, letters from the readers, and with it all presented in a nice physical form.