I'm looking for something in the 200$ range...I know it won't be great, but atm it's kind of just to play around with. For now I am spending my bigger money on the Tamron 28-75mm F/2.8, which I plan to use for the majority of my shooting. Anyways, here are the two lenses I'm currently looking at: Sigma 70-300mm f/4-5.6 DG APO Macro (http://www.amazon.com/Sigma-70-300m...4?ie=UTF8&s=electronics&qid=1195623034&sr=1-4) Tamron AF 70-300mm f/4-5.6 Di LD Macro (http://www.amazon.com/Tamron-AF70-3...2?ie=UTF8&s=electronics&qid=1195623223&sr=1-2) Anyways, any comments on these two lenses or recommendations on a better one would be great...of course, within the price range. And please, also comment on the Tamron 28-75mm F/2.8 I am getting, thoughts or reco's on a better lens. Thanks.