This is a colossal bargain and I can't enthuse about it enough.
Most of my Bach listening comes under the heading of Period Instruments but there are some recordings such as Milstein's of the solo violin sonatas and partitas which transcend all issues of style. This is one of them.
Joy is the word that springs to mind throughout. Joyous chamber music like playing. Joy at new discovery. Joy at the sublime music making.
There are too many delights to count and whether or not this is what Bach intended (how will we ever know) this is superb musicmaking. Even on that count the string sound is surprisingly bracing and rhythms, especially internal ones, are beautifully sprung. The performers consistently have a ear for Bach's melodies. Even the ubiquitous Air from the 3rd Orchestral Suite is deeply moving.
Mercifully we are beyond arguments about whether this music should be done in period style or not. To adore these recordings is not to advocate a return to this style but rather a celebration of the universal genius of Bach however he is played. Hear both!