The PS3 is the most advanced system on the market right now because it has a lot more features like internet browsing, blue ray, compatibility with the PSP,  it can play PS2 games, and a decent size internal hard drive. 

The Xbox 360 is the second best system on the market it can play high def movies with the HD attachment it can play music and old Xbox games.

The Wii is a good system but its the worst compared to the rest. Its a very innovative idea but its not very practical and the batteries always die on the controller. The Wii can also download old games of the internet with Wii points and it can play Game Cube games.