A very good rule to go by with optics is that if its more expensive, it's usually better. The Leica Magnus and Vortex Razor are both very high quality optics and in the $1,000 price range, the Vortex Razor is just about the best low power variable optic on the market. If you have specific questions between the two please feel free to email us at techsales@opticsplanet.com.