What brand is the best aged vinegar in Shanxi?

Famous brands of Shanxi over-mature vinegar are: Ninghuafu, East Lake, Qingquan, Water Tower and Zilin. Ninghua House and East Lake are national intangible cultural heritages with a century-old name, both of which belong to Taiyuan. Qingquan is a provincial intangible cultural heritage handed down from five generations. Each brand of mature vinegar has different aging time and acidity, and each brand has its own characteristics. The longer the aging time, the better. It's good for me to be jealous for eight years.