When buying a , you are essentially choosing between a traditional handheld collapsing telescope, a modern monocular, or a high-powered spotting scope. Modern spyglasses are valued for their portability and quick one-handed use, though they often trade off the image stability and field of view found in binoculars. 1. Key Specifications to Evaluate Vortex Razor HD 27-60x85 Angled Spotting Scope