one thing seems certain, and that is that nintendo has an advantage on durability, that is if the gba is any indication, I remember one time where me and a friend of mine were playing Zelda:Four swords, and my dog ran through, tripped the cord, ripping the gba out of my friends hands. We picked up the gba and kept playing, after it had landed on the floor pretty hard. (The cord came unplugged so we had to start the level over, which sucked, but the gba was absolutely fine.) It makes me wonder if the PSP can take that kind of abuse so well.