I've been using the Saunders LPL 670 DXL Dichroic enlarger for over a year with a Schneider Companon-S lens and 35mm film exposed with my Leica lenses and have gotten astounding prints. I previously owned a standard Saunders condensor enlarger but got extremely frustrated with dust spots on all my prints. Since replacing it with the 670 DXL, dust spots are non-existent. Thus, I agree with the post just above mine 100 percent: she is doing something wrong or there is something wrong with her setup.