A KVA does not come into our house

My wife has this machine extensively evaluated before.
Contrary to our first statement, a KVA does not come into our house, we had decided not to take a chance of the machine.
Long story short, we had now 4 machines, and each one is not the way I imagine a KVA.
The first two attempts were already adequately described.
The 3rd machine tasted very nice, the coffee grounds in the cup was not almost exist.
Unfortunately, the machine was under the drip tray always wet, which certainly was not because of me, because the drip tray was removed very carefully.
It also happened that the drip tray according to the reference would be emptied of only 1 cup of coffee, it was still wet.
Furthermore, I noticed that the brewing unit could not be removed because the little red slider could not be pushed into the recess provided, this was on the opposite side, and twist to the correct position was not possible.
Quite incidentally, the "warm milk" designated as such is really laughable, which was barely room temperature.
So, back to the unit.
The 4 machine we unpacked, connected, adjusted, etc., drawn coffee.
The coffee tastes watery, in the lower third it is completely inedible because bitter, there is plenty of coffee grounds on the floor.
I do not know if the other reviewers away the reality of life, have no taste buds more to persuade their achievement beautiful, or whether we just had bad luck.
The number of 4 machine lets me exclude the latter actually.
Where we once again seek our original statement, a KVA does not come into our house !!!