Party chat, Party chat, Party chat!
I have both a 360 and PS3 but I do all my online gaming on the 360 because of this feature. I like to be able to control who I speak to online, so I don't like randoms or the other team hearing the tactics me and my friends make. Of course if you don't play team based games this would be a mute point. It wouldn't bother me very much on Wipeout for example, but I don't want to play Battlefield 1943 or another team based fps without this feature.
PSN just feels like a step down from LIVE.







