Choose between these DSLR cameras - Nikon D3100, Nikon D3200, Nikon 5100 or Canon Rebel T3?

What is the best entry/mid level DSLR camera out there? If you had to pick from the four listed below, which would you recommend?

Nikon D3100 (or it's replacement the Nikon D3200)
Nikon D5100
Canon Rebel T3 (or any version of the Rebel - please identify)
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