Chris Kohler’s whipped up a Venn diagram to help you separate the wheat from the chaff, the backward-compatible from the gimped. An Xbox 360 version is undoubtedly right around the corner.

You have to give credit to Nintendo, I believe they've only added a single new SKU, and that was just to add the new Wiimote sleeve. Diagram: Comparing The PlayStation 3 Models [via wired] ...