coming late to the discussion, here is one more against the gossen.
i used to use a predecessor of the sixtomat F2, the sixtomat digital (without flash meter).
while i was happy with it while it worked, i noticed after several years, that the buttons became unresponsive. seems it was some dirt between button and circuit board, which would have been easy to remove if i only could have opened the case without destroying it.
so, i'd not choose a gossen meter that uses those rubber buttons.
just my half cent.
si tacuisses, philosophus mansisses.