Good call on going with the vortex. All of the optics I have for my family is vortex. That's 7 scopes, 3 binos, and a spotter. All are Viper or Razor. I agree with what all above have said. Buy the best that you can afford. If your not using it to help ID animals at a very long range, the Viper will work more than fine. If there is a possibility that you will be trying to ID animals at a few km, get the Razor. Another thing to take into consideration is whether or not you will be packing the spotter on a hike where space and weight is an issue. The Razor is definitely a more compact unit. Just something to think about.