Which jaw harp is best for a beginner?

Jaw Harp Glazyrin "Magnum" experimental

Jaw Harp Glazyrin "Magnum" experimental
Russian Vargans /
Oberton Pro Lab measurements:
Base frequency: 70-75 Hz (?)
Reed hardness: 130-150 gf (?)
Reed size: 90x15-20 mm
Overall dimensions: 115x32x5-7 mm (?)
Archived model (?)
Experimental version of jaw harp with a new reed and magnetic ball, later divided into two -magnum" without a magnet and "Phantom." with changes in sound and magnet.