Which jaw harp is best for a beginner?

Mondharp "Yellow Joker"

Mondharp "Yellow Joker"
Netherlands Mondharps /
Oberton Pro Lab measurements:
Gaps: 50-150 µm (?)
Base frequency: 80-150 Hz (?)
Reed hardness: 90-180 gf (?)
Frame hardness: 400-600 gf (?)
Reed size: 45-60x20-25 mm
Overall dimensions: 50-65x25x5 mm (?)
Archived model (?)
The shape of this model of mondharp is similar to the "Blue Joker" and differs from it in the body material (brass vs. blued steel), the processing of the reed (polishing against blackening) and its protruding tail behind the frame. Acoustically, these jaw harps do not differ very much - Yellow has a slightly higher volume and a slightly coarser sound.