The 3DS is gaining a lot of momentum now with some excellent releases, but when the system came out it took a while to find its footing. The Wii U is suffering from the same problem and will pick up eventually. For me, there are only two games out now that I want to play on the Wii U (Lego City Undercover and Monster Hunter 3 Ultimate). For the time being, 3DS is where it's at and will be for a while now. I'm happy with my purchase of the 3DS and am looking forward to Shin Megami Tensei IV and Pokemon X/Y (just to name a few).
@darthorange: I'm hoping to go into detail when I put up my verdict, but here's a few quick pointers for you. The game took me about 7 hours, but I don't think I got everything. The game was pretty fair in difficulty and felt like a challenge during boss battles and at the end. I enjoyed my time with the game and consider it a worthy product.