You have almost everything I have liked in this category already on your list along with several more to add to my "to read" list. One I thought was good, but not great was Z for Zachariah. You might also want to check out Feed by Mira Grant. I have not read it yet, but it was nominated for the Hugo award for best novel 2011.

One I would recommend NOT reading/listening to was The Rising by Brian Keene. I have seen it on some other's lists, but I thought it was frustratingly pointless.