Which jaw harp is best for a beginner?

Mondharp "S-shaped"

Mondharp "S-shaped"
Netherlands Mondharps /
Oberton Pro Lab measurements:
Gaps: 50-150 µm (?)
Base frequency: 95-115 Hz (?)
Reed hardness: 70-120 gf (?)
Frame hardness: 500-1500 gf (?)
Reed size: 35-60x20-25 mm
Overall dimensions: 100-140x20x5 mm (?)
Archived model (?)
Experimental mondharp in the form of two interconnected jaw harps (F3 and C4) requires great skill and use of both hands. The scheme is more exotic than convenient - it is much easier to use universal mounts-clamps to connect individual jaw harps into sets.