Purchased last November. The NY series differs from the Symphony series in the shape of the rim, featuring a mouthfeel that envelops the player. It feels similar to a Bach 4G, but the smooth rim shape eliminates any feeling of constriction, allowing for a more open blowing experience and the production of a richer, warmer tone with more overtones. Shifting is also easier, making it stronger for leaping (slurred) phrases. The NY series becomes deeper as the number increases, but this particular model is slightly deeper than a 5G, requiring more air, but allowing for the performance of a richer tone. Retail price: 45,800 yen (NY medium weight, all models) Cup inner diameter: 25.95 Cup depth: medium deep (between 5.5 and 6) Bore size: 7.13mm (From the Joy Brass official website)