I'm not asking about short term benefits like 'oh, the DS is cheaper, buy it'. I'm asking about long term benefits like the costs of the games we buy, the quality of the handheld, which is more fragile, which has more game to download for free, which has more application, the screen, and so on. If you choose PSP, which is better, the old style one or the Go one. And if you choose DS, which is the best one?
And can you name some other benefits (long term) of the one you choose and the reasons why you don't choose the other one!