The stock ones on the Epi's don't sound bad, actually. The whole guitar packs in a lot of value for the money. That being said, there's always room for improvement.
Another contender which just caught my eye and which I'd certainly like to hear are these babies:
http://www.seymourduncan....whole-lotta-humbucker/ But again, these are more expensive than the DiMarzio SD or such.
Bats - Thanks for the link, I'll check them out.