The diamond stone will be used for any flattening of the Spyderco stones and course sharpening. I am leaning to 2x8 Eze-Lap Medium Diamond 'stone'. It seems that the Atoma is the weapon of choice for flattening, but not sharpening. I am hoping, and let me know if I am wrong, that for the little bit of initial flattening and the occasional surface renewal, a sharpening diamond stone will do.
Thx's, Fred.