Digital BW, The Print

When Epsons are used as intended (color) the difference in dot size
between different models is an issue. With 
monochromatic inksets, each ink a different density, visible dot size
has far more to do with separation methods than 
printer related dot size. With certain methods, for example the Piezo
driver and profiles, the difference in physical dot size 
becomes a practical non-issue. I'd imagine any comments Cone has made
about printer model preferences are made 
within the context of using his driver.
Other methods will clearly reveal dot size differences to varying
degrees. If reducing visible dots is a goal, there are many 
ways to approach achieving it, using the Epson driver or RIPs or
Cone's. But they all have to do with keeping each 
successively darker ink out of the scale until it is absolutely
necessary. This requires really packing in those dots of lighter 
inks. Tightly packed dots of light ink do not appear dotty (even with
the 3000), widely spaced dots of dark ink does.
So, it's about methods, not printers. Obviously the 1160 or other
small dot printers allow a less vigorous separation  
approach, leaving room for other considerations.
Tyler