you cant really say what system is best because all that matters is the games. take x-box, most powerful graphics but the games 1 rarely utilize it and 2 gameplay usually sucks ass. Where as ps2 games have been refined to utilized all of its graphic capabilities and the gameplay is solid and has been since the start. So you can say X-box is the best console because it's most powerful but the games cant match ps2.

No i will not talk about GC as i find it has no good points.