so $15/year buys me access to hour long demos (1/5th a game in some cases) cloud servers and a lifetime warranty? Sony would never offer those 3 features over the lower level for that little $.
Either way, I wouldn't pay anything for any of the features listed, as demos would still come out, and I'm more than patient enough to wait for them. Also, I don't even have a microphone for my PS3, so voice chat is useless.
(actually, I might pay for the last, but Sony would never offer such a great deal)