I dislike all portables but even if I didn't PSP is pretty horrible. The problems it had when it came out where laughable, the battery life at times is like 3 hours. And of course Bet..er UMD. Thats my view on it and I came to it because of the price for it, my dislike for all portable stuff (I see no point in gaming that much), all the problems it had when it was released and finally the lack of interesting games (Why buy a portable port when i can play the thing at home with better controls and visuals on my ps2).
Though I don't dislike the DS as much mostly because of the touch screen and game selection, they seem pretty fun for a few minutes and some have caught my attention. I would NEVER buy one though so it really doesnt matter. (For alot of reasons along side my dislike of portable games in general, carrying around the stylis for example seems like a pain and just unnecessary).
Now about PO, I wish it looked better at the very least (not in graphic quality but in design, i don't like reused assets) and carried the story in a heavier direction like MGS3. I mean MGS3 really made you feel for him, I can't see portable ops doing the same.