Have you noticed that as a voyager is used, its key "spring-click" degrades with time? It is very noticable if you find a really used one and compare it to a never used one. If the machine is worn enough, this degradation can really affect the quality of the user input tactile feedback.
Now, here is the interesting part: if you are using one of these old machines on a desktop, the effect is much worse than it is if you are holding the device in hand, squeezing the buttons with your thumb, against the pressure of fingers on the back. Apparently, one's tactile feedback is much more sensitive when using the hand in a grasping mode.
Regards,
Bill