I have a full size and multiple 60%'s, they’re all very reliable, not the heartiest, but I had the first one for over 5 years, all of the screws stripped out of the back (from being repeatedly walked on by the dogs, rolled upon by myself), and it still worked. But using it became a chore so I caved and bought another to replace it.
Ban floride testing of the water, there’s no treatment used in mass water to remove all natural occurring floride.