FURUNO GP 39 GPS-Receiver

Over the last 30 years I have consistently equipped my various sailing yachts with FURUNO products, radar, GPS etc. and have always been satisfied.
I recently replaced the old GP 32 with the new GP 39.
Unfortunately, I now have to say that the computer scientists who developed the menu navigation in the new GP 39 obviously had very little expertise in using the device on a sailing yacht, or did not consider it necessary to have competent sailors as users to include development.
Although all functions can be accessed in ways that are sometimes quite difficult to find, some are extremely clumsy and impractical. There was no reason for criticism on the old GP 32.

For example, it is almost impossible to find the appropriate waypoint alphabetically in the waypoint list, because after 2-3 seconds the waypoints rush through at an extremely high speed, so that you have to make numerous new attempts to find the appropriate waypoint alphabetically .
The texts of the device's feedback when checking the coordinates of a waypoint are also completely nonsensical. When checking the coordinates, the device asks Do you really want to change the waypoint?, which is just completely wrong. No relation to the content of the operation.
It is also noticeable that the device has a slightly smaller display compared to the previous GP32 model, although the housing would allow for a larger display. Operating the cursor field, which is far too small, is hardly possible precisely with slightly larger hands, especially not with cold hands in bad weather.

On the button of the Furuno GPS 39 is material error (is un face) in the plastic

The device is very good in its function, but in the operation needs to get used to.