@sally @dagda Yeah, the PSP's battery life isn't great. The disc drive is also loud as hell. Honestly, the lack of a second stick makes most first or third person games on it suck. It still has a semi-decent library, especially for non-3D action games, like Visual Novels, Rhythm games, Puzzle games, etc.
I just think, as Dagda said, the fact that most DS games were ground up creations makes the games on there far better, as opposed to the crappy PS2 ports that plagued the PSP.