Just one nitpick correction for you: It's Zabini, not Zambini.
Sorry, it's one of my pet-peeves.
This chapter was pretty outstanding. Susan's argument made perfect sense, as did Harry's reaction. It's a shame we didn't get to see Peter Abbott flattened, but it's more important that Harry didn't hurt him.
Can't wait for your next update.
Author's response
I fixed it already here. I'll fix ff.net later. I must have some kind of strange mindblock when it comes to that name. I do it all the time. Glad you enjoyed the chapter.~Jim