Should I get inFamous or a PS3 official headset?

I heard inFamous was great so that sounds fun. I like to play a lot of online with Uncharted 2 and I have a headset but its always picking up feedback and static and it makes noises even when its dead quiet. Its a resident evil 5 headset (cheapest one at gamestop) so I can understand it stinx. But I can get inFamous for $30 and a ps3 official headset for 40$ which is a good deal for each, considering they're both brand new. So which should I get?

PS: If you play Uncharted 2 online a lot and have a mic, give me your PSN ID and I'll add you cuz a lot of the kids on there are like 12 and it annoys me to death. So I need somebody more mature and you know... proper age.