To be honest, I am already at the tightest (finest) setting, and it drips out 30g of espresso in 30s with 10g coffee. Any tighter and the machine chokes, or there will be water leaks through the sides of my bottomless PF.
Just to confirm I won't get any "upgrade" in taste from further upgrading my grinder right? And yes, my grinder is pretty much close to zero retention already.
Have considered the CC1 before, but heard of many nightmares on QC. Am not living in the states, hence warranty will be a PITA.