I don't know if this will help anyone, because you might have rented the game, but be careful of Socom 4 if you are truly wanting a team experience. You will very rarely find that on the 32 player respawn games, and the game has a lot to do with luck rather than skill.
Lots of grenade spam online, and the bullet spray results in a lot of headshots. Even we I was playing good, I didn't feel like it. You can look on their leaderboards and see almost no one has over 15% accuracy on overall aim. It's just not the teambased game I expected.
Also, the single player is kinda throwaway. It's only about 5 hours long, and almost every level is completed twice. Once at night in stealth, once in day with full combat, and your AI teammates are really dumb (only noticable when you play on higher difficulty, which I don't recommend if you easily get mad).
If you want a distraction, this is a game that could do it for you, but it's not something that will keep you around a long time. I had to wait a month almost to play it online because I bought it on release, but it really was not worth it. I don't think it's worth it for $33 either. Please try it out before you buy it.
