Interesting vid thanks.
The Kinu M47 Classic was James Hoffman’s preferred hand grinder from the range he tested however he briefly mentioned that the majority of his testers preferred the Commandante.
The 1Zpresso JX-Pro seems to have a legion of fans here in Australia and I’ve only heard very positive reports from owners so I suspect that’s a pretty darned good grinder too.
I’ve had the Porlex which I didn’t enjoy so much and I’ve stuck with the Kinu M47 Classic as my travel grinder.
Based on Hoffman’s review and this one, it would be hard to go wrong with the any of them with the possible exception of the Porlex which some may find produces a thinner espresso without a shorter lasting taste.
Much though I like the Kinu, as soon as the Mazzer Omega lands in Australia I’ll be trying it. Mazzer burrs (Niche Zero 63mm) seem to out perform Italmill burrs (Kinu 47mm) - thanks @DavecUK for the heads up on the difference which is marked.
The biggest challenge I have with the 83mm conical benchtop hand grinder is seasoning the darned thing. Dialling it in was all over the shop for the first two kilos of beans and that’s a LOT of grinding when it’s all done by hand. So if you do a get a hand grinder, just be aware that your pour times may be inconsistent for a while, although with smaller burrs my guess is that they will season a lot faster than the 83mm monsters.