Very nice mills... I use the crush grind grinders in all my mills, don't like the knurl on top of the Chef's... I can never get the height just right for the top to fit properly.
I like the spectraply especially.... until the prices got so high I used a lot of spectraply... I sometimes cut the blanks in 1 or 1 1/4" slabs and incorporate them in my glue ups for the mill blanks... they seem to sell really well when I do that.