We have an ancient Saisho MW4500 microwave oven that has a keypad
where any cooking time can be programmed in to the nearest second.
Looking for a replacement we have seen a Panasonic with a 1s timer,
but all others seem to be a minimum of 10s intervals. All have stupid
10min, 1min, 10s keys or rotary dials that really annoy us rather than
having a proper keypad.

Any Europeans know of some good makes that have a keypad to enter any
cooking time you want?

Given that keypads can't be too expensive, would any other people pay
a premium to have a keypad rather than three time keys?