I can't decide. (PSP or DS Lite)

[SethSquall]

Basically I just want a little help here. I've got enough for a DS lite and 3 or 4 games or a PSP, 1 game and a 1gig memory card. I mainly play RPG's and both handhelds have a decent selection of RGP games. The PSP has more RPG games out at the moment but DS is set to have some more in the future. I won't just play RPG's though. First off here are games for the DS lite id like to play and would be looking forward to. Not in any specific order.

Dr Kawashimas Brain Training - How old is your Brain?
Animal Crossing - Wild World
Lost Magic
Phoenix Wright Ace Attorney
Metroid Prime Hunters
Sonic Rush
Lost Magic
Advance Wars - Dual Strike
Trauma Center - Under the Knife
Resident Evil DS


-------Below: Not out yet------

The Legend of Zelda - Phantom Hourglass
Children of Mana
Lunar Genesis
Custom Robo Arena
Phoenix Wright Ace Attorney - Justice for All
Star Fox DS
Tenchu - Dark Secret
Elite Beat Agents

Now heres a list of PSP Games id like to play.

PoPoLoCrois
Astonishia Story
Tales of Eternia
Breath of Fire
Street Fighter Alpha 3 Max
Mega Man Powered Up
Tenchu: Time of the Assassins
Ghost in the Shell: Stand Alone Complex
Enlarge Mega Man Maverick Hunter X

-------Below: Not out yet------

Power Stone Collection
Ys - The Ark of Napishtim
Crisis Core - Final Fantasy VII
Guilty Gear
Silent Hill Origins
Infected

I can't be assed looking for more. Does anyone here own a DS/PSP and would like to tell me how great there handheld is and why I should by either handheld. Anyone want to put there views on either forward? Thanks for times guys.