You should go for the new slim, it's much more energy efficient, more failure proof, an evolved version of PS3. Backwards comp. PS3 new go for 400+ euros and you really don't want to buy used.
MY HYPE LIST: 1) Gran Turismo 5; 2) Civilization V; 3) Starcraft II; 4) The Last Guardian; 5) Metal Gear Solid: Rising