I think I suggested the same
I think its abt what you need.. PS3 is old hardware but still performs fabulous at HD however, it has Move Controller it cannot put you into the game and Xbox 360 is also a great console which will immerse you into the game with Kinect..
Well, you are right, PS3 is great at graphics..
A good news is waiting, PS3 is moddable and that too through USB Modchips check this out How to MOD A PS3....
After Modding, you can run games from the HDD too..
For the USB Modchip, you can checkout
OZ USB Modchip
For the USB Modchip, you can checkout
OZ USB Modchip