Looking for a 70-200/2.8 for my 5D to photograph my niece's wedding (well, at least that's my excuse ). It has to be sharp wide open, creamy bokeh, and with a nice 3D pop. Oh, and auto-focus is a must, but can live without IS. My budget is at or below $700.
I have narrowed it down to Tamron SP and Sigma DG HSM. So far have seen nice renditions from my Sigma 24-60, 150/2.8 and Bigma (I love the Bigma). But have been reading horror stories about their 70-200 either back or front focusing.