The Kronos Quartet is, IMO, one of the most eclectic and accomplished string ensembles of the last 100 years. I can't think of one recording they've done that was not of high performance standards (and most also have excellent audio quality), although I'd readily concede that not every release will appeal to every listener. Two of my personal favorites of theirs are:
1. "Pieces of Africa";
2. "Kronos Quartet Plays the Music of Bill Evans" (or wording close to that).
1. "Pieces of Africa";
2. "Kronos Quartet Plays the Music of Bill Evans" (or wording close to that).