I am interested in buying a new camera for my self i have experience using a canon power shot SX20 iS. Its time to upgrade and im not sure which camera to buy, i like taking landscape pictures, close up and out door pictures. I think the Sony one would be the best but but the canon has more mega pixles but doesnt have as many features as the Sony or Nikon im not sure which one is better for landscape pics help me decide. Which do you think is better and why.

Canon EOS Rebel T2i 18.0MP DSLR Camera With 18-55mm IS Lens Kit

Nikon 14.0MP DSLR Camera With AF-S DX NIKKOR 18-55mm VR Lens Kit (D3100)

Sony Alpha SLTA33L 14.6MP Digital SLR Camera with 18-55mm Lens