I am going to assume that you have good reasons for selling your 70-200/2.8. I think you are going to miss the fast zoom. I would suggest another 70-200/4, either IS or non. if you go with non then you can probably get a dedicated macro lens right away. When I made the decision on a dedicated macro lens I went with the Sigma 150 because I get extra working distance from bugs' stingers without sacrificing speed if I need it (I don't have a flash for macro yet, so I am needing the speed at times.)


If you love macro work nothing beats a high quality dedicated macro lens. the Sigma 150 and both of the Canon 100mm are good buys for their money.


Sorry that is kinda ambiguous.


dan