This installment of the SOCOM series is much more user-friendly.
There are 70 guns to use and strong customisation (4 attachment slots for each weapon). The gameplay is fantastic, be warned you use a Lock-On system, however it doesn't hinder the action or gameplay.
For offline play/story mode, there are some of the best cutscenes/cinematics I've seen on the PSP. Voice acting is solid, enivroments have good detail and you have a 4-man squad to command and help defeat your enemy. While the enemies CAN be a bit stupid at times, it's great.
As for online, there is a massive amount of guns, customizable characters, good map layouts and balanced play.
I'd definitely recommend this for anyone looking some solid shooting action on the go, or a very good online tactical shooter on the PSP. Get it now!