XBox Live has more features than PSN no doubt but nothing I can justify paying $59 for. The gameplay elements and other core elements are identical plus PSN has WiFi included. Live you need to buy a $120 antenna or wire up your house. $59 + $120 and you've easily closed the price gap between PS3 and 360 Pro except the PS3 throws it BD, 8 years of futureproofing, and an extra 60GB over the Pro.
PSN: EDguila
PS3 library: Motorstorm, Assasin's Creed, Orange Box, Uncharted:DF, Metal Gear Solid 4, Resistance:FOM, Rachet & Clank Future:ToD,
Near future: Folklore, SOCOM Confrontation, BioShock, Little Big Planet, Resistance 2.