which game should i buy next for my ps3?

[ROBOTECHHEAVEN]

was thinking about these games,   1. eternal sonata

                                                        2. bioshock

                                                        3. soulcailbur4

                                                        4. farcry 2

                                                        5. dead space

                                                        6. call of duty :world at war

i can get 2 of these games, which ones do u think i should get next? also any other ones i missed, u think i should consider? thanks for any replys and advice . :)