That looks pretty good. Saw a 40-800x on Newegg that I'm thinking of getting in a few months.i have the 20-800x scope. works great. just did this one a few min ago...
way over kill, and it will be pretty hard to conduct on plant inspections. go for something like this: http://www.ebay.com/itm/110747608280I just got http://www.amazon.com/gp/product/B0058L9804/ref=oh_details_o00_s00_i00
its awesome. No eyestrain. no holding a stupid mini microscope steady.
I just bought this one, I could not stand the cheap 10 dollar magnifier. It works great
http://www.amazon.com/Digital-USB-Microscope-Video-Camera/dp/B0011E0IYW/ref=sr_1_2?ie=UTF8&qid=1356567808&sr=8-2&keywords=usb+microscope