Really is a no brainer going for the Duo with the two sets of burrs IMO.
I was in the position of buying a grinder for filter, I already have a cheap Hario hand grinder but life’s way too short😀 and keeping my existing grinder, which is massive, for espresso but with only the espresso burrs you’re spending £680 for an espresso grinder in which case you’d be better off with the Niche Zero (plenty available SH but the SH prices are high so I’d personally buy new from Niche) rather than the duo but as said above you’d be lucky to buy a decent filter grinder for £120.
End of the day you can always buy the Duo with both sets of burrs and flog the filter burrs for what you paid for them or buy the Duo with the espresso burrs and then try to source a set of filter burrs which might not be easy I’d imagine it would much easier selling the filter set than buying them second hand.
Tony
