VFM is simple and practical, the only negative is that the chestnut does not turn as easily compared to expensive ones, which is why it sounds louder.

Empirically, the German chestnuts that have the switch for right/left are not practical at all (it constantly obstructs the switch, and it only changes where you work it, and it simply doesn't make sense unless the key has an inclination)... that's why I suggest only keys like this one that don't have a switch, and are straight without inclination...