I did a bit of diggng. Theyr the PSP models released recently in the EU and Australia. It seems as if the "E" stands for European. They're not too expensive either, so I may look into one. They sure are slick...
I love the department Heaven games and most, if not all of them have made it to PSP. Riviera and Yggdra Union are my top pics, though Knights in the Nightmare and Gungnir are still pretty nifty.