As incomplete but generous selections, the performances from Grumiaux/Haskil and (a bit older) Goldberg/Kraus have always been especially endearing to my ears. Availability on CD is another matter; perhaps someone here knows if they're currently in print.
Frankly, not everyone may want an integral set of the Mozart violin sonatas, but I feel safe in recommending this one: Grumiaux's later performances with Klien, augmented with ones by Poulet/Verlet and van Keulen/Brautigam in the complete set on Philips Mozart Edition, may not supplant the Haskil in my affection, but they ARE superb and have provided me with just about all I'd want of these works. Good sound, too. Since acquiring this set last year, I've kept it on my desk at work where I can pull out a disk and pop it into the boombox on (frequent) occasion.
Of course, there are plenty of others to consider (agree about the appeal of Kagan/Richter, for example), both historic and more recent, but the ones above should be on anyone's shortlist to audition.
FWIW,
Dirk