I'm more looking forward to the 3DS generation than I am the Wii U. The DS is my favorite system to date, and the 3DS's launch year looks like a very solid start to continuing that highly memorable handheld goodness. I already have Super Street Fighter IV 3D, Dead or Alive Dimensions, Ridge Racer 3D, Ocarina of Time 3D, Star Fox 64 3D and Pilotwings Resort. I still plan on getting Cave Story 3D, Super Mario 3D Land, Mario Kart 7 and possibly Pokemon Rumble Blast this year. For 2012, Luigi's Mansion 2, Animal Crossing 3DS, Paper Mario 3DS, Mario Tennis 3DS and Kid Icarus Uprising are all on my list of wanted games. Of course, with the 3DS, I can still play my DS games and to me Nintendo's DS selection beat out its Wii selection both in quality and in quantity. It wasn't until the DS generation that I played the same games year after year due to my enjoyment of such games, examples of which are: Super Mario 64 DS, Metroid Prime Hunters, Mario Kart DS, Animal Crossing Wild World, Chibi Robo Park Patrol, Sonic Rush, Meteos, WarioWare Touched and more. Most of which have also either been my introductions to series or my favorites of the series.
Where I found myself more of a console gamer during the GCN/GBA generation, it has completely switched during the DS/Wii generation. Due to my experiences with that handheld, that preference for handheld experiences is going to push into the 3DS generation and has already happened. To be honest, being tied with more expense all around, the Wii U hasn't appealed to me much at all and I've considered only owning the 3DS this generation.