Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Finest recording of these masterpieces

Period instruments or not, this is the greatest recording of these quartets ever made. The Mosaiques have the most gorgeous string sound of our time, they easily match the Quartetto Italiano in their best days, and for sheer understanding of the Classical Quartet they are matchless. Auvidis sound is exquisite, so ignore all others and buy this one.