Thanks, Dan, for the great review! They’re selling like hotcakes. For those of you looking for something similar to the old Jet-Tone MF Personal, this mouthpiece may be perfect. Be advised that the cup is very shallow. If you would like something with a slightly deeper cup, consider the Legends JT MF or Legends JT MF Master.
- Legends JT Super C: .593″ Inside Rim Diameter, Very Shallow Convex V Cup, Legends Manhattan (very focused) backbore
- Legends JT MF: .593″ Inside Rim Diameter, Medium Shallow to Shallow Convex V Cup, Legends S (standard) backbore
- Legends JT MF Master: .590′ Inside Rim Diameter, Medium Shallow to Shallow Convex V Cup, Legends S (standard) backbore
Here are the specs from the old Jet-Tone pamphlet:

Original Jet-Tone Literature