Carmelo Patti is something of a legend here in Mendoza and has built his reputation on being the master of fine wines in the area. The Gran Assemblage is his masterpiece. It is a blend of his other wines and is as smooth as any wine you will ever have - the taste of fruit jumps out at you and the finish is amazing. Carmelo ages his wine for a year in the tank and another year (at a minimum) in the barrel before it goes to bottle - to say he is a perfectionist is to underestimate his work.
The folks at the Vines are not the only people who find his work amazing - I found the following on the web about Carmelo and his wine - I don't know who wrote this, but I added a link to their site so that you can read the full article.
"As we tasted the wine from his winery, Carmelo was excited to talk about his production as if it was one of his children. He described its birth and the cares he had had to take as it grew up, always alert to every detail. Already in the casks, we tasted a riper wine and its incredible assemblage, a blend of four varieties, which awakens amazing sensations as it is sampled. It is hard to describe. When I met Carmelo, my vision about wineries changed completely. I understood that there is something irreplaceable beyond technology to make a good wine: the art and the love transmitted by a good enologist." Here is the link.