http://www.fattoriapetroio.it/index_en.htm --my biased opinion.-- I had the great pleasure of drinking much of their chianti while staying at their Tuscan estate. Great place, people, wine... Great times... They even left a Lamborghini for me to drive. --too bad it was just a tractor.
Trader Joes carries their Chianti. ~12$/bottle (tho' that may be just a left coast thing ...that my be going up; Euro/dollar thing)
The Riserva is a bit nicer, but much more $
