Time to jump-start this thread again…
My collection…
The Zero was a B. day present from my youngest several years ago. OK grinder with decent kief catcher
The Cheech has interrupted threads, 1/3rd of a turn and it’s locked. Tolerances are a little sloppy though.
The Kannastor - best kit ever.
It came down to Kannastor, Phoenician and Santa Cruz. Luckily they (Toronto Hemp Co.) were out of the Phoenician I was interested in and when I compared the two - Kannastor won.
L to R
bottom collector, body, lower plate holder w course plate, top plate, top cap holding the ‘secret stash’
(I do not have the kief screen installed.)
or…Alternatively…
a Mk II Curta for scale
My only concern was it might be too small 
…I grind once a week.
Cheers
G