microscope

What would be a good microscope for doing fecals? I'd welcome recommendations. What about either of these? https://www.amazon.com/Koolertron-Microscope-Magnification-Adjustable-Rechargeable/dp/B07FRRTD9L/ref=sr_1_3?keywords=10x+microscope&qid=1560209279&s=gateway&sr=8-3#customerReviews This...

So I told DH that a microscope was an absolute must have for the farm. I am searching the Web for what kind and getting conflicting info on if I need a minimum of x10 magnification or if it can start at x40. Here are some links to a few on Amazon, I hate shopping and need someone to tell me to...