Danubius String Quartet
Judit Tóth and Adél Miklós, violins
Cecilia Bodolai, viola
Ilona Wibli, cello

This recording, part of a complete cycle, may be hard to find on CD, but you can download in MP3 format.
The Naxos.com site includes information about the disc, including the liner notes by David Nelson.
Lionel Salter's Gramophone review from November 1992:
"A hearing of these discs gives rise to the uneasy suspicion that the musical world may have been barking up the wrong tree by devoting so much attention to the exotic eccentricities of Villa-Lobos's series of Bachianas brasileiras and Choros (which provide fertile talking-points) rather than to the more 'civilized', less loosely rhapsodic, more structured and more abstract music of his string quartets."
Download MP3s from Amazon.com or ClassicsOnline