We do enjoy the 1zpresso J-Max I bought last year for our cafetière and V60 when travelling and sometimes at home. Arguably I didn’t need its finer micron adjustment and would find the smaller one of the two I know DC has to serve the purpose but I liked the longer throw lever, external markers, magnetic cup and travel case.
I’ve no comparison with other hand grinders, for me it has been one of those products you buy and take to and don’t think about anything else.