Het guys i'm looking for a First person shooter for PSP. I can't decide between 4 games, which one should i get?

-GRAW 2

-Medal of Honor Heroes

-Syphon Filter Dark Mirror

-Coded Arms

Thanks! 

Syphon filter

Syphon Filter isn't a FPS is more like a TPS, but is the best one among those titles, Medal of Honor is a good game too. Avoid GRAW2 is horrible, coded arms is ok but i didn't like it that much. Long story short:

1-SP: Dark Mirror(You can hold on a little more and you should buy SF:Logan's Shadow, but neither game is a FPS)

2-MoH: Heroes(you could hold on a little and buy MoH: Heroes 2)

3-Coded Arms

4- GRAW 2(Avoid it at all cost!)

from what i have heard Coded Arms and MOH: Heroes are the FPS games to get on the PSP. Activision kind of screwed up porting Call Of Duty to the PSP.