About to make my first spotting scope purchase. I have decided on Vortex. Currently trying to decide between 65mm and 80-85mm and between the viper and the razor. Obviously these are very different scopes ranging in prices from $1000 for the Viper 65 to $2300 for the Razor 85. I'm wondering what feedback people have for 65 vs 80-85 in general. The 65 is a full pound lighter. Perhaps a better question is the Viper 80 ($1400) vs the Razor 65 ($1800). I usually spend most of my time still hunting blacktail in the timber but I want to branch out this year to more spot and stalk. That being said I won't be glassing Dall sheep 3 miles away. More likely Elk or Mule deer 700-800 yrds away. My general rule of thumb is to buy the best I can afford at the time. I've never regretted buying the best. Any and all feedback is greatly appreciated.