i think get a Jap one but no yet because the revised edition will be out soon in US so the revised edition will be in Japan when the current stock is sold so wait until US release and then get a Jap one cause you should be able to watch UMD films on the Jap one in the Uk where as the US one will not work with UK UMD films. Also the revised version will have all bug fixes like squeky bits. I got 3 psp value packs from Japan and I am selling in the UK
