Imagine grinding your coffee beans only to realize your grind size is all wrong, and your coffee tastes off. Getting the ...

Whichever model you prefer, the grind size matters for an optimal cup of coffee. French press grounds should be coarser so that the metal filter can catch them, preventing a gritty sip.

For each contender, I used whole beans from Coffee Project New York and Partners Coffee and tested multiple grind settings (where applicable), focusing on drip, espresso and French press.