I originally owned the PSP ''phat'' model. Unfortunately, the screen cracked during a trip. I've been meaning to replace it, but I just kept procrastinating about buying a replacement screen.
And today, while walking to the subway, I stopped by a Circuit City in midtown and ended up buying a black slim model on impulse. :'(. After opening it, I honestly thought the box contained a mock up PSP. It's so freaking light. It look great, though.
I hacked my original via custom firmware. But I hear pandora's battery is the new hotness. Is it not too hard to implement? Custom firmware was pretty easy from what I recall.