There is only really one rival in this repertoire and that's the Kronos set that covers the same ground, though their set doesn't include the first quartet.
The performances here are wonderfully paced and range from delightfully restrained to whirlwind energy.
The recording is excellent and the notes informative and helpful.
The playing time may seem a bit on the short side (98 minutes) but it's priced as a single, mid price CD so it's good value regardless.
But the crucial question is, how does it compare with the Kronos Quartet's disc?
Well, it's cheaper for a start. The recording quality is slightly clearer with better focus. As for the performances, I would, by a very narrow margin, place this above the KQ set. But it's very close.