You probably already know that inFAMOUS 2 does the business. Sucker Punch managed to improve nearly every aspect of the original while correcting the few flaws of the package, and in my mind, the dev cycle went something like this:
Was the City too grey and boring? Fine, we'll destroy it and set the action in an awesomely colourful New Orleans homage. Fancy creating your own content? Cool, we'll stick in a massive level editor. You happy now?!
Yes, as it turns out. The price will probably fall a little over the next fortnight, but as it stands, this is the best price around.