Bolgheri, your thoughts?

I do not have your years of tasting many examples from vintage after vintage. From my few times enjoying a few of the heavy hitters from this region ( Masseto, Messorio, Tua Rita ) I have the impression that this is one of the best places on earth to grow Merlot. Can you comment? I often prefer them to St. Emilion, and pretty much always to Napa.

The clay knoll of Pomerol is the Holy Grail of Merlot for me. Just was at the harvest of Conseillante yesterday. But after that I love Bolgheri for Merlot - particularly the middle vineyard of Massetto.