Which jews harp is best for a beginner?

Pavel Potkin's komus Big 2013

Pavel Potkin's komus Big 2013
Altay Komuses /
Oberton Pro Lab measurements:
Gaps: 200-300 µm (?)
Base frequency: 75-85 Hz (?)
Reed hardness: 70-90 gf (?)
Frame hardness: 800-1100 gf (?)
Reed size: 75x20 mm
Overall dimensions: 85x35x6 mm (?)
Archived model (?)
Potkin’s “large” jaw harp is 1.5 cm longer than the standard one, and the stiffness of the reed is increased proportionally so that the pitch of both variants is approximately the same. The accuracy of the assembly of a large one is much more modest - this is a coma with one of the largest gaps. The sound is quiet, the rustle of the finger and high sounds are strongly heard. If you do not pay attention to them, it is more convenient to play at a fast pace on this instrument than on a small, but by world standards, the general level remains low.