On PS1 the only franchises I loved was Syphon Filter and Crash. Maybe Spyro.
PS2, I loved Mark of the Kri, God of War 2, and Ratchet and Clank
PS3, I loved Uncharted, The Last of Us, and Heavy Rain.
PS4, I loved Until Dawn and Gravity Rush (does that count?)
Guess I'll go with PS3.