I prefer the Motic microscopes to the Omano brand. Both have very good optics, but I find the Motics to be much more comfortable. I was at a plant identification seminar where we spent 5 to 6 hours on a Motic/day and was never uncomfortable. I ordered Omano, and found that I could not use it for 5 minutes without being uncomfortable. The problem is that you have to set the interpupillary distance too close- if you set it at a comfortable distance you cannot achieve binocular vision. Thus, the eyepieces squashed my nose and forced my eyes at a sort of strained angle. The Motic eyepieces interact with your eyes at a more comfortable angle. They are both relatively similar in price and ability to customize/accesorize. Maybe other people are comfortable using the Omano scopes- like riding a different make of bicycle or something like that.