Which jaw harp is best for a beginner?

TK961 "Toroen Prong" Jew's Harp

TK961 "Toroen Prong" Jew's Harp
Vietnamese Jew's Harps /
Oberton Pro Lab measurements:
Gaps: 150-300 µm (?)
Fundamental frequency: 80-90 Hz (?)
Reed stiffness: 120-150 gf (?)
Frame stiffness: 300-800 gf (?)
Reed size: 65x20-25 mm
Overall dimensions: 75x40x3 mm (?)
Weight: 40 g (120 g with case)
Low quality jaw harp with loud sound and dirty, mechanical timbre.