I agree that you shouldn't have to scan the terrain for game however out here in AZ finding coues deer is one of the hardest things you can glass. Many times you find them in your Bino's and they disappear on you when you try and range them up. They aren't called the Grey Ghost for no reason...
Leica, I have had 3 in the past 12 years and loved all of them. I have been running the 1600B for awhile however it doesn't have all the bells and whistles like the new ones...
Just remember you can't range something you can't see. The Leica glass is excellent.