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I don't get the lack of love for the Zassenhaus Turkish grinder.
I've used mine everyday for 10 years and it shows no sign of slippage, no hammering required. It'll grind as fine as (obviously) turkish style and (apparently) up to french press. Mine has stayed in adjustment with no need for Loctite. -
By grind quality I mean the uniformity of particle sizes - equally as important for filter brewing as espresso. The usual problem with low end grinders is that they produce a wider range of particle sizes and lots of fines in particular, which I've found makes it harder to get a positive balance of flavours consistently.
Ta. Will look 'em up. Though it's worth pointing out that I don't make espresso at home - V60 and French Press with occasional Aeropress. So grind quality comparable to Porlex isn't number one concern.
Concerns are: Not having to hammer bits of metal onto each other so that they fit properly. Not having to spend 10 minutes grinding enough beans to make a flask of coffee. Size of device on work surface. Also pretty.