Cuprajake the duo is a cracking grinder, and while with a medium choclatey bean you will get a bit more out of it, is it worth selling 2 zero’s no,
same bean in milk with the zero vs duo is like dark choc (z) vs milks choc (d)
One thing I notice is that I often don’t get enough separation of flavour. By that, I mean flavour complexity or nuance. My drinks taste decent but I can’t consistently point to a specific flavour nuance (that I like). Sometimes (on a good day) I get a flavour that I like that persists beyond the finish (I term this “flavour length”). Periodically I get in a groove and a bunch of shots in a row have good separation of flavour, have tastes I like and flavour length. It’s a consistentcy thing. In-between those good shots (say 2 or 3 out of 10) is a fair bit of tweaking to get back to the good shots. FYI I tend to drink milk drinks because my straight espresso shots are not sweet enough.
Perhaps when I eventually acquire a lever machine and/or complete my flow profiling dimmer mod to the Lelit E, things will improve.
Sorry to weave off topic. It’s my long winded way of asking if a change of grinder (from an NZ to a Duo, or ??) will help?
