check this vid out!
www.engadget.com/videos/Eng_Cat_PSP_vs_DS.mpg
30 meg, it took me all day to sneek it in at work.
Brilliant acting and props. 
I knew which one was going to win. Rooting for the underdog.
the DS isnt really an underdawg, except in marketing hype.everything said was true…
i have a friend who has a PSP and the loading times are so bad…i could order a pizza, eat it and maybe the load is over.
she never brought up the fact that the DS is backwards compatible with GBA games though…another stylis in the screen…so to speak.
I don’t know, the DS seems to me to be overly simpistic. Ok its cheaper & the games are aimed at a younger audience for the main part (there are some exceptions, beforeyou all flame me to death), but its a technical nightmare, and the screens (both of them) don’t do it justice. Maybe they went for cheaper suppliers to keep costs down, but I have DS in one hand & a PSP in the other right now, and the DS feels like one of those plastic VTECH 3 year olds ‘teach me ABC’s’ computers.
The PSP, on the other hand, is much more expensive, (as are the games), but it shows in the increased functionality and the overall build quality. Its either very decieving, or the PSP really has got the build quality to price thing spot on, being much better than you’d expect for the money. The screen is pin-sharp and the menu system is well designed. I don’t notice the load times, but maybe thats because I’m used to them on every current-gen console and most PCs.
For kids with less money - DS
For people with money to burn & who want the extra music playing, video playing, internet browsing functions. - PSP
These are only my opinions however, I’m not an expert in stuff like this.
Loose.
My friend has the psp. Loading time does take FOREVER. I’ve never seen a DS.
Movies on the psp are suprisingly good quality, its clearer than my TV.
Sweet, Cat Schwartz was my favorite screensaver back in the days of TechTV.