First there is only one timer shared between the microwave & oven which is frustrating when I am using both at the same time.
Second, the timer is very quiet so you cannot hear it - even when I'm in the kitchen.
Third, the oven (& microwave) timer only beeps once so if you miss hearing it, you won't realize that it beeped.

It doesn't matter if an appliance cooks evenly if you overcook all the food because you can't hear the timer go off.