I recently picked up I Will Kill Your Imaginary Friend for $200 by Robert Brockway and thought it was pretty good. So I looked for some more stuff by him and found Carrier Wave. It's a mixed bag. The first parts are great, but then it kind of loses its way and meanders for a while, then the ending is just meh. It's strongly influenced by The Stand (especially the ending) and World War Z so if you like either of those it might be worth a look.

After Carrier Wave I started There Is No Antimemetics Division and I'm about halfway through. It's really good.