Which jaw harp is best for a beginner?

Dubrovsky's jaw harp "The Turtle"

Dubrovsky's jaw harp "The Turtle" ' . L('index_recommended_1') . '
Russian Vargans /
Oberton Pro Lab measurements:
Gaps: 70-90 µm (?)
Base frequency: 49 Hz (?)
Reed hardness: 50-60 gf (?)
Frame hardness: 350-400 gf (?)
Reed size: 85x22 mm
Overall dimensions: 110x40x4-20 mm (?)
Archived model (?)
A massive jaw harp with a unique design and low, deep sound. Playing an instrument with minimal gaps and a soft reed is easy and pleasant, but the mechanics do not allow you to apply complex strokes - with an increase in their frequency, background humming begins to occur. Good jaw harp for a leisurely playing.