The feature you wish for may not be included at the price you are willing to pay.
I have not felt a Need to buy a New bike computer since When I stick a new battery in mine It works .
so I dont dispute your market survey..
My favorite mount is on the fork blade , because I only look at the milage data when I need to Know.
and having it there No One steals it because it's kind of hidden.
Its on my old Touring Bike.