Not that I don't think Beaucastel is top 10 worthy (heck my wife and I enjoy their stuff thoroughly) I definitely detect a bit of bromance between JM and Marc Perrin
Personally I think as Chianti Classico representative for the top 10 San Giusto a Rentennano was a good choice. Their entire profile of wines are excellent IMO. No offense to the big families but nice to see a break from Antinori or Frescobaldi.
My only problem with naming San Giusto a Rentennano is that it has long been my favorite producer from the Chianti region and I oppose anything that increases its price.