If you are seriously interested in Loire wines you should go to the Salon des Vins de Loire wine show. It helps if you are in the trade, since it is a professional event. Perhaps not all, but not far from it, of the producers will be there; thousands of wines to taste, hundreds of winemakers to meet. The latest edition attracted almost 10,000 visitors.
The next edition of this important wine show will take place on February 6 to 8 in Anger in the Loire Valley. More info on www.salondesvinsdeloire.com.
Loire has (approximately) 77 AOP/AOC which probably makes it the wine region with the largest number of appellations in France. 550 exhibitors are expected at the fair.