Sigma or Tamron 70-200mm?

I wanted to get some opinions from some of you. I only own Nikon lens, but can't afford the 70-200mm 2.8 price for Nikon. I was wondering if you would recommed Sigma or Tamron? I can't decide which one to go with.

I would suggest the sigma because it has a better build quality and overall better performance. But its always better to go to a camera shop and try it for yourself and make your own decision.

I wouldn't recommend either. I own one third party lens, a Tamron, and I'll not buy another. In fact it's so problematic that it's in a drawer and not even in my bag. But Nikon lenses - trust me you'll be much happier in the long run. Yes they do cost more because they're much higher quality than most 3rd party lenses.

You can consider Sigma 70-200mm f/2.8 DG HSM II Macro Zoom Lens for Nikon Digital SLR Cameras

Improved optical performance with a minimum focusing distance of 39.4"/100cm, and maximum magnification of 1:3.5
Two SLD and three ELD glass elements provide excellent correction for all types of aberrations
Super multi-layer coating reduces flare and ghosting
HSM ensures quiet, high speed autofocus with full time manual focusing
APO Tele Converter is available