Sigma 70-200 F2.8 HSM ii EX DG Macro Zoom Vs Nikon 80-200mm f/2.8 AF-S

I have the latest Sigma 70-200mm 2.8 without the OS, and I must tell you out of all of my lenses, this is the only one I am disappointed with.

I have a Tamron 200-500mm that is tack sharp, and all of my other lenses are Nikon and are excellent. If you can afford to get the Nikon, go for it- it will be better @ 200mm.