Which jaw harp is best for a beginner?

JJ251 "Jakutische" Maultrommel

JJ251 "Jakutische" Maultrommel
Austrian Maultrommels /
Oberton Pro Lab measurements:
Gaps: 100-150 µm (?)
Base frequency: 75-125 Hz (?)
Reed hardness: 40-80 gf (?)
Frame hardness: 250-450 gf (?)
Overall dimensions: 75x35x5 mm (?)
Archived model (?)
This type of maultrommel by Josef Jofen appeared in 1994 as a result of a visit to the Austrian workshop by Yakut master Ivan Khristoforov. In fact, the jaw harp uses the same reed as in Nr.10Together with the similarity of sizes and working segments, the dec does not allow us to talk about a significant difference between these instruments.

On test records, jaw harps of different settings are used.