Hey! I've been a engadget reader in Japan since 2005 or so. I love your podcast. I really love gadgets. Japan is a good gadget country, but all the unique gadgets around the world just fascinates me.
My thoughts: it's always better to find a genuine SONY one even if you think it's expensive. This holds true even with my 8MB PS2 Magic Gate. Sure, third party ones are good enough, but they lack "something" which can only be bought by a genuine SONY.
I think the P should have double Atom CPU or something if that's even possible.