I agree with Utopia. In Parma forums, Canna would win.
As I'm a Laziale and Nesta's fan, ppl won't take my opinion and judgement as an objective one.
So, let me introduce the comments by the two giants in Italian Calcio.
<Baresi>
Baresi talked a lot about Azzurri in an interview.in a magazine published this spring.
Q: Is there a player who can be the heir to you in Azzurri?
Baresi:
I've always said for more than 2 years, Nesta is excellent in technique and he has all the qualities needed for a defender, of course including physical merits.
He'll be more than "the 2nd Baresi". He even has the possibility of reaching far higher level than mine.
Like Baresi said, so far he has often said the same on "the hair to Baresi" subject, always mentioning Nesta.
<Maldini>
Also this spring, he was asked about his successor.
Maldini said he hoped in his son, but in the meantime, he chose Nesta.
By many players, from great ones to young promissing ones, Nesta is often mentioned as the best defender or the world-best.
I believe, players can judge it the best. Especially great and mature ones can judge it by far the best.
And remember, Nesta is always a nominee in the "best Italian" and the winner of "best DF" in Oscar del Calcio, voted by Serie A players.