Hi Diane - I did have taxane therapy: three cycles of FEC (similar to AC) and three of Taxol. My oncologists explained that the rationale for varying the chemo drugs is that different drugs stop cell division in different ways. My cancer was similar to yours - ER/PR+ and Her2-. But it was lobular, not ductal, and I had one positive node. I agree with PJ, you should get a second opinion and/or the Oncotype DX test (which I wasn't a candidate for, because of the node).
All the best,
Andrea