Hm, for a different opinion:
I'm using my Kindle 3 for reading Dungeons & Dragons 4 Books.
These babys are 65MB of graphic-heavy / funny text-formating books.
I still love my Kindle to death ^_^
Page turning is very fast (in my opinion), zoomed-reading is "ok" not "perfect" and it works best with selectable text (not badly scanned pdfs).