Paris Quartets, TWV 43, Vol 1 (1738)
- Worth the high price tag
- Editor's Choice
Also available: Volume 2
This is another excellent Urtext edition from Barenreiter. It includes notes on performance practice and is well researched and produced. If this is your field then this is your edition (but then you probably know that anyway).
Difficulty level, roughly compared to ABRSM exam grades. 0 is beginner, 9 is advanced (beyond grade 8).