I always thought the Zeiss was better, and they are when on the same power. But the one thing I found with the Zeiss is if you are on 3 power and go to 9 then you have to re-adjust the focus to get a super clear picture. Where with the Loopy, if you focus it on one power, then it is focused for all the powers. I could of just been doing something wrong with the Zeiss...