well the japanese has english manual also. Basically there isn't much difference because it's been said that the ps3 is even autovolt. So even if says 110v for the jap and us, and 220v for the asias there is no diff. All games are supposed to be region free. The only affected is backward compatibility with orig ps2 and ps1 games. Plus the dvd's region code. But bluray is the same with jap, asia, and usa. Asian is the cheapest unit. Plus, it plays pirated dvd kasi most pirated dvd are region 3 hehehehe