While I had a lot of fond memories with the PS1, all the improvements with PS3 (such as HD graphics, PSN store, wireless controllers) make gaming so better for me. Plus, I can play PS1 games on my PS3!
PS1 had some amazing games and introduced us to quality franchises and real 3d gaming.. PS2 took that a step further and extended those franchises, bringing further interesting games and evolving the way we played games.. and then PS3 came along, amde everything wireless, real online play, amazing gaming series and paved the way for the future with the PS4...