Nintendo all the way, even the sales charts support it, they've been the best and will always remain the best, to be honest, I like 'em both, but the fact remains.
in graphics, sound quality, length, and price, sony wins. however, nintendo has great gameplay, and games are more space and memory efficient (ds is just a tiny cartridge that stores save data on itself, whereas psp has UMD discs that are larger, and in addition to that the save files must be on a memory stick, unless you have the psp go, which can't read UMD's)
if you're just going to stand there like an idiot in front of the enemy, you might as well kill yourself now!
Oh Nintendo, WHY did you not keep up in the Graphics department?
I'm a forever Nintendo fan. Wii has some mistakes [Wi-Fi FC's o.e, Graphics, Third party games (Konami where ARE you?),"family" targeted] but Nintendo will surely iron these out in the next generation of Consoles.
One bread ahead of the bread. Two bread; too much bread.