While I have a soft spot for the original Playstation since it was the first game console I touched and the PS3 has more feature wise, I will have to say the PS2 is the best in the Playstation line of consoles. It is fully backwards compatible with PS1 games, has a fantastic game library of its own, and at the time, it had a DVD player that was pretty good which admittedly was the first DVD player I used.

PSX

That's debatable.

As much as I love my PS3, I'd have to say that Sony really didn't do themselves any favors with developers with a system architecture that vaguely resembles a two-headed cow, so PS2.

I always preferred the original PlayStation, but I'm gonna have to vote PS2.

I still have my old PsOne console stashed away in my cupboard, which is the only console that I've ever bought for myself, (If I don't count the Sega Megadrive that I got from my parents for Christmas when I was 8) so I guess I'll go with that.

ps2 hands down

I'm going to go with PS4 since it will be the first Playstation I'll actually own. I haven't owned a console since the N64.

The PS2 is my favorite console ever, on account of having the biggest amount of great games that I played.

I am going with PSP - If I have to choose a console then PS2