i still like just using the camera and loupe,you get plenty enough magnification and have the added bonus of not taking bits off your plant and being able to examine them on the pc monitor
these pics are through a 10x loupe with 3x optical zoom on the camera,taken in 4 megapixel mode,shows stalks and heads clearly,and although not crystal clear,as good or better than the view through a loupe or microscope at the eye