You may want to check this out:
http://breastcancerupdate.com/bcu2007/4/perez.asp
Dr. Edith Perez says that for those hr+ women who have had adjuvent Herceptin, there isn't (yet) any DFS difference between those who took Tamox and those who took an AI. Time may tell a different story, but there is a lot of data out there that does not account for the adjuvent use of Herceptin.
Me, I'm happily on Tamox. I was highly both ER and PR positive. I am too young for menopause and after consulting with three different Oncs, they all recommended the Tamox, so I let it go at that. Shutting down or removing the ovaries at a young age can have serious health consequences that should be considered.
Jen