PS3 is the best, but for me PS2 still rocks.
When I say XBOX360, I have to update firmware regularly and give the console a special treatment.
Wii, on the other hand, is another great console with a new-branded gameplay, which player must use his/her movement to execute through Wiimote or Nunchunk. However, although Wii has more games than PS3, it lacks on the quailty snce many of them are sport games and casual games. On the other hand, hardcores and veterans, especially me, can only play the game with the famous title since NES such as Mario Galaxy and Zelda.
PS3 has best graphics(since the media is Blu-Ray and HDMI-TV), however since the price is still expensive, I can't afford it.
So I guess that PS2 still rocks and I love to play many good PS2 games.