Tamron AF 70-300mm F/4-5.6 Di LD Macro VS Sigma 50-200mm f/4,0-5,6 DC OS HSM?

Don´t care about the price, just the performance.
I shoot Nikon.

Read more: Tamron AF 70-300mm F/4-5.6 Di LD Macro VS Sigma 50-200mm f/4,0-5,6 DC OS HSM?