Luv2Fight,

I haven't made a 75 micron print, but there is quite a noticeable difference between the 100 micron and the 25. We had our microscope attachment at CES and we let people really see the difference.

We plan to have samples of the same part (with angles and curves so the layer height can be seen well) in 200, 100, 50 and 25 micron layer heights with us at 3D Printer World Expo in a couple of weeks.