Ps3 Game Recommendations (best Graphics & Gameplay)?

Hi!
I am going to buy a Playstation 3 and i am thinking of what games to buy. I have managed to narrow down my 5 favourite and i would like you to select the 2 best out of this list by graphics and gameplay also could you give me a rating for each game for graphics and gameplay e.g Fifa 09- Graphics 8/10 Gameplay 8/10
Heres the list
Gran Turismo 5
Burnout Paradise
Need For Speed: Undercover
Need For Speed: Pro Street
Thank You!

Tagged as: best, game, Gameplay, Graphics, Recommendations