If we're talking right now based on games, the 3DS. Has more exclusive games to its platform right now and more.
If you just want a new console experience, get the Wii U. Not as many games is available to it but as we saw with the Nintendo Direct, they're coming along with some games we haven't heard about yet. It has some games to tide you over along with the fact that it's backwards compatible with the Wii --- (NNID/PSN): EnVy_CaLiBeR (GT): EnVyXCaLIBeR (3DS): 2895-6776-7223 Ravens! 2012-2013 Superbowl Champions!