If 9E is too shallow, try this model. Not only does it produces a bright and sharp high register but also easy-low registers. -the manufacturer
Specs:
• Cup Diameter: 15.95mm
• Cup: mildly shallow
• Throat: #25 (3.78mm)
• Backbore: M
• Rim Width: 5.823mm
• Rim Contour: flat
• Rim Top Balance: 43%
• Rim Bite: fairly sharp
• Similar to: Bach 10.5D (but slightly smaller)