I bought a Redhead 20-60 X 60mm. I believe it's the exact same scope as the Trekker of the same magnification and objective diameter. Around $150 when I bought it. I probably would have been just as well off with a 15-45X scope. In cheaper optics, such as mine, with only a 60mm lens, at 60 power it's a pretty dim image. I usually have to go down to 45-50X to get a better view of the detail.