Dude i did suggest u to get PS3,
besides your son. u could utilize it as well
likewise u could use it for blue ray movies if ur not so into games
Or Wii could be recommended as it would be more suitable for your son as its games are more Family oriented and its cheap too..
Or Xbox360, topup a tad more from the PS2 u can get this as currently the price has depreciated.
If ur interested in any of them, pls PM me lolz