I have looked into buying a microscope, for the business, to study mycorrizae and the diseases of turf. It may never pay for itself, but still give me specific knowledge of what we are actually looking at in the problem lawns. I have not had recent experience with microscopes so my question is: What are the important features or specs necessary to see the difference between one fungus/bacteria and another? Will a $500.00 scope do it? thanks for any input on your experiences.