If you have to play it and have to play it on PS3 then pre owned at a discount is probably worth it but expect bugs and frustration.
(Cue the flood of those with no issues, well about four of them on the forum maybe)

You may get lucky , you may not is't a coin flip.
If you have the option, the PC is the best possible option for avoiding /fixing / dealing with bugs and better content for the game.