Who do you think is the best active defender at the time?

Cannavaro
http://www.youtube.com/watch?v=kNsbNyrmzCk

Puyol
http://www.youtube.com/watch?v=vifq8-bQErM

Ramos
http://www.youtube.com/watch?v=Mw64yUDVI9o

Marquez
http://www.youtube.com/watch?v=RDPDY-EvQTw

Maldini
http://www.youtube.com/watch?v=8fb8BjydXkQ